Write a program to print the sum of individual digit of given number

#include<stdio.h>
#include<conio.h>
int main()
{
int no,sum,a,b;
sum=0;
printf("enter the number");
scanf("%d",&no);
b=no;
while(no!=0)
{
a=no%10;
sum=sum+a;
no=no/10;
}
printf("sum of digit is %d",sum);
}