Sum of Digits of Number using C language

Program Code:

#include<stdio.h>

#include<conio.h>

int main()

{

int num , sum = 0 , mod ;

printf("Enter any number =  ");

scanf("%d",&num);

sum = 0;

while(num)

{

mod = num % 10 ;

sum = sum + mod ;

num = num / 10 ;

}

printf("\n\nSum of digits of given number is  =  %d",sum);

getch();

}

Output:

Enter any number =  55

Sum of digits of given number is = 10