C++ Exercises: Check if a given non-negative number is a multiple of 3 or 7, but not both

Last update on December 20 2024 12:28:14 (UTC/GMT +8 hours)

Multiple of 3 or 7 but Not Both

Write a C++ program to check if a given number that is not negative is a multiple of 3 or 7, but not both.

Sample Solution:

C++ Code :

#include <iostream>
using namespace std;

// Function to determine if a number is divisible by 3 or 7 exclusively (but not both)
bool test(int n)
{
    // Returns true if n is divisible by 3 exclusively XOR (n is divisible by 7 exclusively)
    return n % 3 == 0 ^ n % 7 == 0;
}

int main() 
{
    // Testing the test function with different input values
    cout << test(3) << endl;  // Output: 1 (true), divisible by 3 exclusively
    cout << test(7) << endl;  // Output: 1 (true), divisible by 7 exclusively
    cout << test(21) << endl; // Output: 0 (false), divisible by both 3 and 7

    return 0; // Return 0 to indicate successful completion
}

Sample Output:

1
1
0

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