Sum of Digits of a Number using Function

 

#include<stdio.h>

int sum ( int n);

int main()
{ int n;
printf("Enter Number : ");
scanf("%d",&n);
printf("The Sum is = %d",sum(n));
return 0;
}

int sum (int n){
if(n==0){ return 0;}
int  result=0,rem;

while(n!=0){
rem = n%10;
result= result+rem;
n=n/10;

}

return result ;

}