Program to Calculate Sum of Digits

Calculate Sum of Digits C Programs

Sum Of Digits means add all the digits of any number, for example we take any number like 358. Its sum of digits is 3+5+8=16. Using given code we can easily find sum of digits of any number.

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

void main()
{
int a,no,sum=0;
clrscr();
printf("Enter any number: ");
scanf("%d",&no);
while(no>0)
{
a=no%10;
no=no/10;
sum=sum+a;
}
printf("\nSum of Digits: %d",sum);
getch();
}

Enter any number : 584
Sum of Digits : 17

Explanation of program

a=no%10;

Here we find remainder of given number, using Modulo Operator we find remainder of any number, Using this step we get only last digits.

a=no/10;

Here After dividing any number by 10 we get all digits except last digits.

Sum=Sum+a;;

Using this statement we find sum of all digits. In first iteration it add 0 and last digits and store in Sum variable, in second iteration it add Previous sum values and last digits of new number and again store in Sum variable, and so on upto while condition is not false.