how to use decrement operator in c++

#include <iostream>
using namespace std;

int main() {
    int num = 5;

    cout << "Original value of num: " << num << endl;

    num--; // Using the decrement operator

    cout << "Value of num after decrement: " << num << endl;

    return 0;
}

Explanation: - Declare an integer variable num and assign it the value 5. - Print the original value of num. - Use the decrement operator -- on num, reducing its value by 1. - Print the updated value of num after decrementing.