VILL- DEBANDI, AMTA, HOWRAH PIN-711410 Phone-9836357266
15. Sum of digits :—
#include<stdio.h>
int main()
{
int r,n,sum;
printf("enter a value of n ");
scanf("%d",&n);
sum=0;
while(n>0)
r=n%10;
sum=sum+r;
n=n/10;
}
printf("%d",sum);
return 0;
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