We have the capability to develop a C++ program for calculating the sum of digits using loops and mathematical operations exclusively.
Sum of digits algorithm
To get sum of each digit by C++ program, use the following algorithm:
- Step 1: Get number by user
- Step 2: Get the modulus/remainder of the number
- Step 3: sum the remainder of the number
- Step 4: Divide the number by 10
- Step 5: Repeat the step 2 while number is greater than 0.
Let's see the sum of digits program in C++.
Example
Example
#include <iostream>
using namespace std;
int main()
{
int n,sum=0,m;
cout<<"Enter a number: ";
cin>>n;
while(n>0)
{
m=n%10;
sum=sum+m;
n=n/10;
}
cout<<"Sum is= "<<sum<<endl;
return 0;
}
Output:
Output
Enter a number: 23
Sum is= 5
Example
Enter a number: 624
Sum is= 12
