C++ Exercises: Find the Greatest Common Divisor (GCD) of two numbers
C++ For Loop: Exercise-9 with Solution
Write a program in C++ to find the Greatest Common Divisor (GCD) of two numbers.
Pictorial Presentation:

Sample Solution :-
C++ Code :
#include <iostream>
using namespace std;
int main()
{
int num1, num2, gcd;
cout << "\n\n Find the Greatest Common Divisor of two numbers:\n";
cout << "-----------------------------------------------------\n";
cout << " Input the first number: ";
cin >> num1;
cout << " Input the second number: ";
cin >> num2;
for (int i = 1; i <= num1 && i <= num2; i++)
{
if (num1 % i == 0 && num2 % i == 0)
{
gcd = i;
}
}
cout << " The Greatest Common Divisor is: " << gcd << endl;
return 0;
}
Sample Output:
Find the Greatest Common Divisor of two numbers: ----------------------------------------------------- Input the first number: 25 Input the second number: 15 The Greatest Common Divisor is: 5
Flowchart:

C++ Code Editor:
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Previous: Write a program in C++ to find the last prime number occur before the entered number.
Next: Write a program in C++ to find the sum of digits of a given number.
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