1. Write a C program to find the sum of individual digits of a positive integer.

#include

int main()

{

int num, k=1, sum=0;

printf(“Enter the number whose digits are to be added:\n”); scanf(“%d”,&num);

while(num!=0)

{

k=num%10;

sum=sum+k;

k=num/10;

num=k;

}

printf(“Sum of the digits : %d”, sum);

return 0;

}