itoa Function in C++: Convert Int to String

The itoa function is used to convert an integer to a string. Here is how it is used:

char* itoa(int value, char* str, int base);

The function takes an integer value, converts it to a string in the specified base (between 2 and 36), and stores the result in the character array str. It then returns a pointer to str.

For example, you can use the following code to convert the integer 123 to a decimal string and print it out.

int num = 123;
char buffer[10];
itoa(num, buffer, 10);
cout << "Number in string form: " << buffer << endl;

Please note that the itoa function is non-standard in C++, so it may not be supported in some compilers. If you need to perform integer conversion on different compilers, consider using the standard library function std::to_string.