C Function Return Char Array Example

It returns an array of String containing the substrings delimited by the given System. Return the array in a struct. The function takes two character arrays (strings) as arguments and returns a pointer to the shorter of the two strings. This code will put back together an array into a string, separating different lines in the array with the specified character. C Language: strncmp function (Bounded String Compare) In the C Programming Language, the strncmp function returns a negative, zero, or positive integer depending on whether the first n characters of the object pointed to by s1 are less than, equal to, or greater than the first n characters of the object pointed to by s2. In this chapter we'll study three workarounds, three ways to implement a function which attempts to return a string (that is, an array of char) or an array of some other type. You can't initialize at the same time return the value at once. If we write *ptr-function without parentheses then it tells the compiler that ptr-function is a function that will return a pointer. In line 8, we have declared variable age of type int. However, you can return a pointer to an array by specifying the array's name without an index. A return code of 0 for the main function is generally interpreted as the program worked as expected without any errors during its execution. The function returns the location of the found character, or a null pointer if the character was not found. Note: In C++, there is a difference in the use of brackets ([]) when declaring a global, static or local array variable versus using this array notation for the parameter of a function. Functions in C with programming examples for beginners and professionals, Advantage of functions in C, Types of Functions, Declaration of a function, Parameters in C Function, Calling a function in C, Example of C function with no return statement, Example of C function with return statement, covering concepts. Returning Array from a Function in C Programming C Programming language tutorial, Sample C programs, C++ Programs, Java Program, Interview Questions, C graphics programming, Data Structures, Binary Tree, Linked List, Stack, Queue, Header files, Design Patterns in Java, Triangle and Star. For example, char Name[4] = "Jon"; declares Name to be a character array of four elements with the first three initialized to 'J', 'o', and 'n' respectively. We know that a structures is user defined datatype in C that can hold several data types of the same or different kind. You can use the functions in this section to perform comparisons on the contents of strings and arrays. In order to allow a function to return an array value, you first need to create a custom array type, then use it as a return function type: Arrays as Method/Routine Properties Similar to using arrays as function return types, when you declare routines that take array parameters, you cannot include index type specifiers in the parameter declarations. h Fifo Queue Example. But what will be the output of calling the function fn_swap with argument as shown below ? fn_swap(&intX, &intY, fn_charswap); Here variables passed to the function are integers but function pointer points to character function. Learn how to use strings in C programming along with string functions. There can be only one constant for the immediately preceding variable, and one constant for each element of the immediately preceding array. Function with no arguments but returns a value : There could be occasions where we may need to design functions that may not take any arguments but returns a value to the calling function. C does not allow you to return array directly from function. In fact, support for varargs is an often requested feature that was first added in SWIG-1. (Note: if f had one or more return statements, L's destructor function would be called when a return was executed). (This means that C uses call by value; it means that a function can modify one of its arguments without modifying the value in the caller. tutorialspoint. C++ followed C for reasons of compatibility and because C++ also compete directly with assembler (in OS, embedded systems, and some numeric computation areas). So, given these 3 strings write a function that detects whether str3 is a valid shuffle of str1 and str2. Dynamic Memory Allocation :: sizeof() We have already seen this function in the array section. Programming with arrays. Return char arrays from C++ to C# is an example : on the stack frame of the function and that stack frame gets destroyed when the function returns. Using CHAR to return single-byte characters. The behavior of this function is undefined if copying takes place between objects that overlap—for example, if s is also given as an argument to be printed under control of the ‘ %s ’ conversion. The wcslen function is the wide character equivalent to strlen. Then we can simply call strcpy() function to copy the c-string into a char arr. String and Character Array. Return is the keyword used to force the function to return a value. The function will then return that integer as a string, which can then be assigned to a string variable. Multidimensional array can be passed in similar way as one-dimensional array. 77777777777778C. Each character in a string occupies one location in an array. This could be because the function chooses among pre-allocated arrays, or it could dynamically allocate one, though you must be very careful with dynamic allocation in the very limited RAM environment of the arduino. Any characters in the block up to the number of bytes specified by the return value are part of the line; any characters after that number of bytes are not. The syntax for the calloc function in the C Language is: void *calloc(size_t num_members, size_t size); Parameters or Arguments num_members The number of elements in the array. A pointer to an array points to the first of the array elements and has its type; thus, the return type of the function is a pointer to type char. This argument is used to return the character string generated by the hardware from the library. The C and C++ array programming abilities that should be acquired: Able to understand and use array, function and a pointer. We know that a string is a sequence of characters which we save in an array. In this article we will show you, How to write the character, or character array (string), or string data to a File using fputc in C Programming. defs] the definition states that “Function signatures do not include return type, because that does not participate in overload resolution,” while 17. For example: char c[] = "c string"; When the compiler encounters a sequence of characters enclosed in the double quotation marks, it appends a null character \0 at the end by default. This should not be confused with the size of the array that holds the string. Numbers with fraction represents real data and anything enclosed in double quotes represents a string. It is not something you'll use. FUNCTION EXAMPLE; int atoi (char * cstr) Parse C-string cstr into an int double atof (char * cstr) Parse C-string cstr into a double long atol (char * cstr) Parse C-string cstr into a long int long long atoll (char * cstr) Parse C-string cstr into a long long int. Although the STL string type has superceded these types of strings, they have been and remain commonly used in practice. To do this is, you can put the pin numbers in an array and then use for loops to iterate over the array. However, you can return a pointer to an array by specifying the array's name without an index. This example program instantiates three different array types int, float and char with a single constructor a member function with use of typename T template. In this example, string is the name of a char array, a string variable; size is the amount of text to input plus one, which should be the same size as the char array; and stdin is the name of the standard input device, as defined in the stdio. C supports multidimensional arrays. In line 7, we have declared two arrays of character name and designation of size 10 characters. If you want to return a single-dimension array from a function, you would have to declare a function returning a pointer. The return value of the function is the similarity measure associated with the target sequence and the input sequence. C++ Examples: Returning a Pointer Instead of a regular value or even a reference, a function can return a pointer. This implies that all concepts that are applicable to arrays and sequences also apply to strings. A vector is a one-dimensional array, and argv is a one-dimensional array of strings. Calling the integer function or character function in the main program is straight forward. For example:. User input/output is a key component in the programs you write, yet most online tutorials just provide a quick-and-dirty method of grabbing data. Hi every body I am very beginner and I am trying to write a simple code. In C++ where function name overloading is allowed, the function signature, that is, the function name and the list of argument types, determines what function we are talking about. How to return more than one value form a function in C programming language. Normally, for binary file i/o you do not use the conventional text-oriented << and >> operators! It can be done, but that is an advanced topic. This container is an aggregate type with the same semantics as a struct holding a C-style array T [N] as its only non-static data member. For example, the command line gcc -o myprog myprog. If the function expects to receive arguments, these arguments are placed inside the call operator. This function is used to find certain characters in strings. While working with arrays of type char, note that the array index always starts from 0. C Language: strcmp function (String Compare) In the C Programming Language, the strcmp function returns a negative, zero, or positive integer depending on whether the object pointed to by s1 is less than, equal to, or greater than the object pointed to by s2. C++ Function Prototype. In C, we cannot pass an array by value to a function. This can be important when trying to understand the contents of a ntca or string. Example: IndexOf returns the location of the string "dog. At its simplest, the size of the returned array can be mandated by the function and require that the user use an array that size in order to get all the results. The return value of the function is the similarity measure associated with the target sequence and the input sequence. In the C++ example it is assumed, that the functions, our pointers point to, are (non-static) member functions of TMyClass. "); are statements. Hi every body I am very beginner and I am trying to write a simple code. 3 In this 2-part series of blogs I shall be discussing ways…. ) However, there are several problems with the function as written. c) The name of an array is actually the address of the first element of the array. The program will prompt the user to choose the operation choice (from 1 to 5). char *strchr( const char *s, int c) returns a pointer to the first instance of c in s. Function overloading means two or more functions can have the same name but either the number of arguments or the data type of arguments has to be different. The net result, is that when an entire array is passed to a function, and the function changes variables stored in that array, it does affect the data in the calling function's array. For example: char c[] = "c string"; When the compiler encounters a sequence of characters enclosed in the double quotation marks, it appends a null character \0 at the end by default. In this tutorial, you'll learn to pass arrays (both one-dimensional and multidimensional arrays) to a function in C programming with the help of examples. An equal number of format specifiers and variables in a function are recommended or else the function may return ambiguous results. Example: IndexOf returns the location of the string "dog. Syntax for strstr( ) function is given below. Note: In C++, there is a difference in the use of brackets ([]) when declaring a global, static or local array variable versus using this array notation for the parameter of a function. VBA example Note: Examples that follow demonstrate the use of this function in a Visual Basic for Applications (VBA) module. The return value enables you to distinguish null characters that getline read as part of the line, by specifying the size of the line. If you want to return a single-dimension array from a function, you would have to declare a function returning a pointer as in the following example −. To define a C-style string, simply declare a char array and initialize it with a string. It returns a Char array with a number of elements equal to the Length of the String. In line 10, sscanf() function is called to read the data from the string pointed to by str. Output: a = 10, b = 20, c = A. Jump statements - break, continue, goto; C++ storage classes, Local variable, Global variable, External variable, Register variable. int getopt(int argc, char * const argv[], const char *optstring); extern char *optarg; extern int optind, opterr, optopt; In order for us to utilize argc and argv, we must allow these as parameters on our main() function: int main(int argc, char **argv) Now that we have everything set up, lets get this show on the road. In this code there are four functions. C++ Program to display the elements of two dimensional array by passing it to a function. NULL Pointer:. Character to hexadecimal conversion. Passing entire array to function : Parameter Passing Scheme : Pass by Reference Pass name of array as function parameter. VBA example Note: Examples that follow demonstrate the use of this function in a Visual Basic for Applications (VBA) module. isalpha(c) is a function in C which can be used to check if the passed character is an alphabet or not. But it is pretty weird. programing 1 integers, a and b (obtained by the user) and will perform the division a/b, store the result in another integer c and show the result of the division using cout. C provides the char type variable, which can contain one character--1 byte--at a time. Returning Array from a Function in C Programming C Programming language tutorial, Sample C programs, C++ Programs, Java Program, Interview Questions, C graphics programming, Data Structures, Binary Tree, Linked List, Stack, Queue, Header files, Design Patterns in Java, Triangle and Star. FUNCTION EXAMPLE; int atoi (char * cstr) Parse C-string cstr into an int double atof (char * cstr) Parse C-string cstr into a double long atol (char * cstr) Parse C-string cstr into a long int long long atoll (char * cstr) Parse C-string cstr into a long long int. The null character '\0' is put after the last character. y In this asec the number of characters in the string literal must eb at most one less than this length. In such a case, you'll. At the same time is a pretty small problem. (See the third example above. Consequently, a string literal is modifiable in C. A classic example of using a function pointer as an argument is the qsort() function in the function library. A C++ example would be- [code]#include <iostream> using namespace std; struct arr2d{ int m[2][3]; }; arr2d func(arr. Character arrays can be used to store character data such as letters or numbers. In line 8, we have declared variable age of type int. Result is stored in int c; c is copied into the return value register and function returns to caller. The ASCII() function returns an integer that represents the ASCII code value of the character_expression. For example: char c[] = "c string"; When the compiler encounters a sequence of characters enclosed in the double quotation marks, it appends a null character \0 at the end by default. Multidimensional array can be passed in similar way as one-dimensional array. Because the array is declared as an automatic variable, its lifetime ends when read_and_process() returns. You should not encounter any compilations errors (please report any you find to the email address given in the Author section below). A function declaration cannot have both a pure specifier and a definition. The Application Program Interface (API) libraries associated with the language: You don’t want to write everything from scratch yourself. Structure can be passed to function through its object therefore passing structure to function or passing structure object to function is same thing because structure object represents the structure. C/C++ does not allow return type of array in a function. 2 Passing Arrays to Functions We have now seen two examples of the use of arrays - to hold numeric data such as test scores, and to hold character strings. But it is pretty weird. one way of doing this is: [code]returnType * functionName(){ return arrayName; } e. Directory -- An object of type Directory stores a list of Entry objects, using a dynamic array. Therefore, g is a function that returns a pointer to an array of 10 pointers to type block. It is an array of char variables, with the last character in the string followed by a null. See how your function decodeImage() returns a char *? That's a pointer to a character array, not the whole array - and you can't return a whole array. Zero-based indexing. Function AB::f is a pure virtual function. However, that return type can be the reserved word void, indicating that no value is returned. (Simple) Warn if the return value of new or a function call with an owner return value is assigned to a raw pointer or non-owner reference. In this tutorial you will learn about C Programming – File management in C, File operation functions in C, Defining and opening a file, Closing a file, The getw and putw functions, The fprintf & fscanf functions, Random access to files and fseek function. In this tutorial we will learn to store strings using pointers in C programming language. This works for fixed length arrays. The qsort() function sorts an array of any type using the quicksort algorithm. As mentioned, this function actually returns something, and it has to, because we told C# that it's supposed to do so. then the value of the function would just be discarded, quite legitimately. This causes the function to end its execution immediately and pass control back to the line from which it was called. But, it is a non standard function. This API is to simply return a NULL-terminated character array (a C string). through 0 to 9. To learn more about arrays and how to use them, you can take this intermediate course on C#. Such a statement would be present in your exports (BOOST_PYTHON_MODULE() definition) for any std::pair you wish to export to python as a result of function return values; of course, the above example is for a pair of ints. Using >>, cin. It is specified in ANSI-C and is the most basic input function in C. Examples are included of "C" malloc() and free() as well as "C++" new and delete. Given a string containing uppercase characters (A-Z), compress repeated 'runs' of the same character by storing the length of that run, and provide a function to reverse the compression. So in simple words, Functions can't return arrays in C. The string functions require the header file string. This part of C programming tutorial has dual purpose: firstly to teach you how to apply previously learned C/C++ knowledge, second: to show you how pointers, arrays, functions and matrixes can be combined together in one single program. Related functions return the value of other variable attributes, such as the variable name, informat, and format, among others. h is the header file required for string functions. Tutorial - Write a Shell in C Stephen Brennan • 16 January 2015. In the previous tutorial we learned how to create functions that will accept pointers as argument. int * myFunction() {. Return pointer pointing at array from function. and then modify that array from the function (i. That is, “i” minus “r” in ASCII code is -9. The most common type of array in C is the array of characters. Jump statements - break, continue, goto; C++ storage classes, Local variable, Global variable, External variable, Register variable. ArrayFunctionExamples. This tutorial provides a basic C++ programmer's introduction to working with protocol buffers. C Scanf Function Additional Arguments. Next, write a sum function that takes an array of numbers and returns the sum of : hese numbers. To pass a two dimensional string to a function we just write the name of the string array variable as the function argument. You have seen an example of arrays already, in the main method of the "Hello World!" application. If you need anything beyond basic array functionality in C++, you can often use functions in the algorithm standard library. You can construct more elaborate examples but these should illustrate some of the difficulties that C's declaration syntax can introduce. Also, C -- unlike C++ -- has no reasonable way of reporting a violation had a compiler decided to generate code to detect it: There are no exceptions in C. My guess is that what you want to do would involve passing a pointer to unsigned char to the function, then copying the desired string literal to the array of. This small C++ example program demonstrates an usage of templates within c++. Sort which internally use Quicksort algorithm. A function consists of declarations and statements, a statement is an expression followed by a semicolon, for example, a + b, printf("C program examples") are expressions and a + b; and printf("C is an easy to learn computer programming language. h header file. It returns a pointer to s1 where the resulting concatenated string resides. You can build up a list of pointers to member functions of arbitrary classes and call them all through the same interface without bothering about their class or the need of a pointer to an instance. Extending Python with C or C++¶. Structures in C. MIPS examples We’ve learned all of the important features of the MIPS instruction set architecture, so now it’s time for some examples! — First we’ll see a nested function, which calls another function. C Language: strncmp function (Bounded String Compare) In the C Programming Language, the strncmp function returns a negative, zero, or positive integer depending on whether the first n characters of the object pointed to by s1 are less than, equal to, or greater than the first n characters of the object pointed to by s2. This is the most usual way to end a C++ console program. Codes listed. ArrayExamples. For example if array name is arr then you. 5: Place helper functions in the same namespace as the class they support Reason. The syntax for the calloc function in the C Language is: void *calloc(size_t num_members, size_t size); Parameters or Arguments num_members The number of elements in the array. Therefore, it can be used as the test in an if statement or a while loop. This often improves performance. makes A::f4() a friend of all instantiations of template X. Veldhuizen and M. h> int m. Syntax for declaring structure array. In the C++ example it is assumed, that the functions, our pointers point to, are (non-static) member functions of TMyClass. Returning that same address is just for convenience, as it can help you chain calls like another_function(function(array)). NET program uses the ToCharArray Function, which converts a String to a Char array. Arrays are relatively straightforward in C++, but as with everything else in C++, you don't get much fancy functionality without using add-on libraries. Additional function print_int_array is used for printing integer array contents. C allows a function to return an array. To get C behavior from the function, transpose the input matrix before calling the function, and then transpose the function output. The function returns the location of the found character, or a null pointer if the character was not found. You can not return an array from a function, no matter what. :rolleyes: any help would be greatly appreciated. 7 String/Array Comparison. Generally it is best to avoid the use of character arrays - the string class is safer and far more convenient. string exString = to_string ( exInt ); cout << "Before to_string int:" << exInt << " and after to_string string:" << exString << endl ;. Consequently, the construct sizeof (char) is guaranteed to be 1. The function could return void, since the caller presumably knows the address it is giving you. Multi-dimensional arrays. Can some smart person tell me what the return statement in function GetByte2 does that makes the copy works fine?. MIPS has a “Load/Store” architecture since all instructions (other than the load and store instructions) must use register operands. Returns the string of hex digits that represent string. Note: These macros do not encapsulate C arrays inside a special data structure or proxy. A 2D character array is declared in the following manner: char name[5][10]; The order of the subscripts is to kept in mind during declaration. This container is an aggregate type with the same semantics as a struct holding a C-style array T [N] as its only non-static data member. Arrays are relatively straightforward in C++, but as with everything else in C++, you don't get much fancy functionality without using add-on libraries. In this tutorial we will learn to return pointer from function in C programming language. This function was intended to create and return a string that is the reverse of its parameter. 1 Reading a String from the Keyboard 10. Here we will learn how to pass arrays as arguments to function and how to accept arrays in functions as parameters. It returns a Char array with a number of elements equal to the Length of the String. In C/C++, arrays are passed by reference. If you want to pass a single-dimension array as an argument in a function, you would have to declare function formal parameter in one. In C language we create functions which are used to process collection of data which is passed in form of arrays. In the example, two different typemaps are used. and then modify that array from the function (i. isArray(array) Returns true if a variable is an array, false if it is not. As mentioned, this function actually returns something, and it has to, because we told C# that it's supposed to do so. A static method can also provide an array as a return value. This works for fixed length arrays. More generically, A C-style string is called a null-terminated string. A classic example of using a function pointer as an argument is the qsort() function in the function library. You have seen an example of arrays already, in the main method of the "Hello World!" application. 7 String/Array Comparison. Syntax for declaration. In this tutorial we will learn to return pointer from function in C programming language. In the following example we have the name of 5 cities saved in an array cities of type char. Easy Tutor says. Notes like concert A have a pure sound that is not very musical, because the sounds that you are accustomed to hearing have many other. I have a function that returns a string (actually i have a number of them), and i want to store this string in another char array. Depending upon the current DFA state, pass the character to an appropriate state-handling function. In this example, the lr_set_debug_message function enables the full trace option just before a call to lrd_fetch, which the user needs to debug because it has been giving unexpected results. 5 calling a function using a function pointer. For example, if you use “return a,b,c” in your function, value for c only will be returned and values a, b won’t be returned to the program. But for functions with arguments, we can call a function in two different ways, based on how we specify the arguments, and. The first word will be stored in char array one, the second in two, third in three, fourth in four and the fifth in five. I need to figure out how to append an int to a string, so basically i need to convert the int to a string 1st, but I cant figure out how. The method I showed above is the standard safer way to do it. 2 Passing Arrays to Functions We have now seen two examples of the use of arrays - to hold numeric data such as test scores, and to hold character strings. However, the use of inline character arrays for storing such array of strings is not supported by the interop marshaler. Then I thought of using strcpy : strcpy ( array , function() );. This example uses the integer and hex values in the valid range for ASCII. String constants can be associated with variables. Examples of the JavaScript string functions in action. However you can also pass an entire array to a function like this: Note: The array name itself is the address of first element of that array. For example, a c_char_p item in the is a ctypes array of c_char. Return is the keyword used to force the function to return a value. Mostly this datatype is used for ASCII codes. Note: These macros do not encapsulate C arrays inside a special data structure or proxy. func2 takes a pointer to a constant character array as well as an integer and returns a pointer to a character, and is assigned to a C string handling function which returns a pointer to the first occurrence of a given character in a character array. However, you can return a pointer to an array by specifying the array's name without an index. A function to return a character array as a fucntion type. In recursion, it is this function that is called, with the exact same signature, not some other function having the same name, but different signature as would be. C++ does not allow to pass an entire array as an argument to a function. C Scanf Function Additional Arguments. But, JavaScript arrays are best described as arrays. C-Strings (Character Arrays) STRING: It is an array of type char. For example:. 'But I thought a string was something in double quote marks', you cry. Character and string are grouped together as 'string'. For example, if you use "return a,b,c" in your function, value for c only will be returned and values a, b won't be returned to the program. They point to functions, which take one float and two char and return an int. Example: to convert a character array containing digits into its integer value. This banking system project is developed for school students. C programming does not allow to return an entire array as an argument to a function. It can be void also, in such case function doesn't return any value. C++ String class Examples and Tutorial C++ may use the C char variable type and string functions but they rely on a null termination and proper memory allocation to hold the string. Surrounding a character sequence with quotation marks, e. Basic features. C++ Array Sort: Sorting Arrays in C++. The function could return void, since the caller presumably knows the address it is giving you. C++ does not allow to return an entire array as an argument to a function. The ASCII() function returns an integer that represents the ASCII code value of the character_expression. The Fahrenheit degree should be a number ending with F. Use the C++ protocol buffer API to write and read messages. 7 How to Return a Function Pointer ? 2. Arrays and Strings 10. This part of C programming tutorial has dual purpose: firstly to teach you how to apply previously learned C/C++ knowledge, second: to show you how pointers, arrays, functions and matrixes can be combined together in one single program. For example: char c[] = "c string"; When the compiler encounters a sequence of characters enclosed in the double quotation marks, it appends a null character \0 at the end by default. In line 10, sscanf() function is called to read the data from the string pointed to by str. In the second method the compiler determines how large to make the array of. Use fgetc function to read character by character. Another common mistake is overwriting a variable containing dynamic memory without freeing any existing memory first. Will C++ be faster than Fortran? by T. For example, a c_char_p item in the is a ctypes array of c_char. The terminating null byte is considered to be part of the string. C++ Function Types (Built-in and User-defined) Tutorial - In C++, there are broadly two types of functions i. In the previous tutorial we learned how to create functions that will accept pointers as argument. In this example, the scope of value parameter L is the whole function; L goes out of scope at the end of the function (line 8). Even more useful is a pointer (constant or otherwise) to a ‘const’ value. 77777777777778C. You can not return an array from a function, no matter what. Additional function print_int_array is used for printing integer array contents. However, inorder to return the array in C by a function, one of the below alternatives can be used. C++ does not allow to return an entire array as an argument to a function. Function Comment Examples • Bad main() function comment Read a character from stdin. Example: IndexOf returns the location of the string "dog. For example, after a call to the following function, each element in the third array argument is equal to the sum of the corresponding two elements in the first and second arguments: void add_lists(int first[], int second[], int total[], int length) { int count; for (count = 0 ; count < length ; count++) total[count] = first[count] + second[count]; }. The delete operator should be used to free a single allocated class or data value, whereas the delete [] operator should be used to free an array of data values. Consider the following example: [crayon-5db7d3e0b1aa0443993042/] Can you point out similarities or differences between them ? The similarity is: The type of both the variables is a pointer to char or (char*), so you can pass either of them to a function Read moreCharacter Array and Character Pointer in C. Now, let us go ahead and create a function that will return pointer. 2 Passing Arrays to Functions We have now seen two examples of the use of arrays - to hold numeric data such as test scores, and to hold character strings. (See the third example above. The simplest form of the multidimensional array is the two-dimensional array. If this approximated value of pi is of interest to the user, then the main program can print the result. - Some of the C++ library functions work only with C-strings. But, JavaScript arrays are best described as arrays. Notes like concert A have a pure sound that is not very musical, because the sounds that you are accustomed to hearing have many other. We have also seen two methods for determining how many cells of an array hold useful information - storing a count in a separate variable, and marking the end of the data with a special. Basic Model for File I/O In C++, the file stream classes are designed with the idea that a file should simply be viewed as a stream or array of uninterpreted bytes. In this post, we will discuss how to convert a string to char array in C++. I'm trying to return a char[] from a function. Veldhuizen and M. If you want to pass a single-dimension array as an argument in a function, you would have to declare function formal parameter in one. Element 0 of the Fname array is a char so the name Fname is the address of a char, that is, a char*. I cannot send the original array and edit it as a pointer, because I need to create a new array with some modifications in my program. In C++ there is no specific elemental variable type to store strings of characters.