itoa Function in C

The itoa function is not a standard C library function. However, it is available in some C libraries as a non-standard extension. The itoa function is used to convert an integer to a string. If your C library does not provide itoa, you can use the standard sprintf function to achieve the same result.

Here’s an example of how to use sprintf to convert an integer to a string in C:

#include <stdio.h>

int main() {
    int num = 12345;
    char str[20]; // Make sure the array is large enough to hold the string representation

    sprintf(str, "%d", num);

    printf("Integer: %d\nString: %s\n", num, str);

    return 0;
}

In this example:

• We have an integer num with the value 12345.
• We declare a character array str to hold the string representation of the integer. Make sure the array is large enough to accommodate the string representation.
• We use the sprintf function to format the integer as a string and store it in the str array. The %d format specifier is used to convert the integer to a string.
• Finally, we print both the original integer and the string representation.

Keep in mind that sprintf can be used for various formatting tasks, including converting integers to strings, but it should be used with caution to avoid buffer overflows. Ensure that the destination buffer (str in this case) is large enough to hold the resulting string to prevent undefined behavior.