TECHCPP LOOPING C++ Program to obtain the sum of digits of given number [DEVCPP/GCC]

C++ Program to obtain the sum of digits of given number [DEVCPP/GCC]

STEPS

In order to calculate the sum of digits of a given number,

1. Obtain the last digit of given number using modulus (% ) operator.
123 % 10 = 3

2. Add the obtained digit in a variable (sum) which is initialized by 0.
0 + 3 = 3

3. Divide the number by 10 in order to remove the last digit from given number.
123/10 = 12

4. Repeat the above steps 1-3 until number is not zero.

PROGRAM

//Program to obtain the sum of digits of given number

#include <iostream>

using namespace std;

int main()
{
int num,sum=0,last;

cout<<"ENTER NUMBER: ";
cin>>num;

while(num>0)
{
last = num % 10; // Obtain Last Digit Of Number
sum = sum + last; // Add Obtained Digit to Number
num = num /10; // Remove Last Digit From Number
}

cout<<"\nSUM OF DIGITS IS "<<sum;
return 0;
}

OUTPUT