C++ program to sum the digits of a given number

C++ program to find sum of digits of a number

 C++ Program to Display the Sum of the Digits of a given Number

This C++ Program which gets a number from input and displays the sum of the digits in the given number. The program uses a while loop to go through each and every digit of the given number and adds them up in the loop.

C++ program:

Source code:

#include <iostream> 

/*  iostream provides basic

input and output services for C++ programs */ 

using namespace std;  

int main() 

// Th execution of program start with the main function  

{  

int num,sum=0,m;

//Variable Declarations specify the type followed by the name

//Initialization is the process of assign the value to a variable    

cout << "\n\n Find the sum of digits of a given number:\n";

cout << " Input a number: ";

// cout is used to display the same statement in the output. 

cin>>num; 

// cin is used to enter the value by the user.   

while(num>0)// While loop    

{    

m=num%10;    

sum=sum+m;    

num=num/10;    

}    

cout<<" The sum of digits is :"<<sum<<endl;    

return 0;  

}