C++ Exercises: Find the sum of digits of a given number
C++ For Loop: Exercise-10 with Solution
Write a program in C++ to find the sum of the digits of a given number.
Pictorial Presentation:

Sample Solution :-
C++ Code :
#include <iostream>
using namespace std;
int main()
{
int num1, num2, r, sum=0;
cout << "\n\n Find the sum of digits of a given number:\n";
cout << "----------------------------------------------\n";
cout << " Input a number: ";
cin >> num1;
num2 = num1;
while (num1 > 0)
{
r = num1 % 10;
num1 = num1 / 10;
sum = sum + r;
}
cout << " The sum of digits of " << num2 << " is: " << sum << endl;
}
Sample Output:
Find the sum of digits of a given number: ---------------------------------------------- Input a number: 1234 The sum of digits of 1234 is: 10
Flowchart:

C++ Code Editor:
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Previous: Write a program in C++ to find the Greatest Common Divisor (GCD) of two numbers.
Next: Write a program in C++ to find the sum of the series 1 + 1/2^2 + 1/3^3 + …..+ 1/n^n.
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