Why is my code for C++ 21 code project wrong?

Question

#include <iostream>
using namespace std;

int main() {
int n;
cin >> n;
cout<<n<<endl;
while(n>1){
cout<<--n<<endl;
if((n%5)==5){
cout<<"Beep"<<endl;
}
} //your code goes here

return 0;
}

Answer 1

The code decrements before printing. That causes it to skip printing the starting value of the countdown. Move the decrement to then end of the loop. Or more appropriately, use a for loop because it is a known number of iterations.

The conditional in the if statement will be always false. Modulo (%) returns the remainder of a division. If you divide by 5, the remainder will be within 0 through 4, never 5. To check for exact multiples of 5, look for remainder of 0.

Answer 2

You have to test how it works and what equals:
n%5
The result of it can on console be printed. Then you can see what happend and why.