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Sum Of Digits In C

Q. How to make program of Sum Of digit (input-> 1,2,3 output->1+2+3=6) In C

#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
long num;
int r,ans=0;
clrscr();
printf(“Enter 5 digit Number:->>”);
scanf(“%ld”,&num);
while(num>0)
{
r=num%10;
num=num/10;
ans+=r;
}
printf(“\nAns=%d”,ans);
getch();
}

After Running Program 🙂