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itoa, _itow

Header File

stdlib.h

Category

Conversion Routines, Math Routines

Prototype

char *itoa(int value, char *string, int radix);

wchar_t *_itow(int value, wchar_t *string, int radix);

Description

Converts an integer to a string.

itoa converts value to a null-terminated string and stores the result in string. With itoa, value is an integer. _itow is the unicode version of the function. It converts an integer to a wide-character string.

radix specifies the base to be used in converting value; it must be between 2 and 36, inclusive. If value is negative and radix is 10, the first character of string is the minus sign (-).

Note: The space allocated for string must be large enough to hold the returned string, including the terminating null character (\0). itoa can return up to 33 bytes.
Return Value

itoa returns a pointer to string.

Example

Copy Code

    #include <stdlib.h>
    #include <stdio.h>
    int main(void)
    {
       int number = 12345;
       char string[25];
       itoa(number, string, 10);
       printf("integer = %d string = %s\n", number, string);
       return 0;
    }

Portability

POSIX | Win32 | ANSI C | ANSI C++
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