Program to sum all the digits of a number.

#include<stdio.h>
#include<conio.h>

void main()
{
int num, k=1, sum=0;
clrscr();
printf("Enter the number whose digits are to be added:");
scanf("%d",&num);
while(num!=0)
{
k=num%10;
sum=sum+k;
k=num/10;
num=k;
}
printf("Sum of the digits:%d",sum);
getch();
}
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