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;
}