c programming itoa() example

Example of using itoa() function in C

Here is an example of how to use the itoa() function in C:

#include <stdio.h>
#include <stdlib.h>

int main() {
   int num = 123;
   char str[10];

   itoa(num, str, 10);

   printf("The integer is: %d\n", num);
   printf("The string representation is: %s\n", str);

   return 0;
}

Explanation of each step:

1. Include the necessary header files:
2. stdio.h for standard input/output operations.

3. stdlib.h for the itoa() function.

4. Declare the variables:

5. num is an integer variable that holds the number to be converted.

6. str is a character array that will store the string representation of the number.

7. Call the itoa() function:

8. Pass the num variable as the first argument, which is the number to be converted.
9. Pass the str variable as the second argument, which is the buffer to store the resulting string.

10. Pass 10 as the third argument, which specifies the base of the number system (in this case, decimal).

11. Print the results:

12. Use printf() to display the original integer value (num).

13. Use printf() to display the string representation of the number (str).

14. Return 0 to indicate successful execution of the program.

Please note that the itoa() function is not a standard C library function. It is available in some compilers and libraries, but its usage is not portable across all platforms. If you need to convert an integer to a string in a portable way, you can use other methods, such as sprintf() or manual conversion using arithmetic operations.