[C++][5] Basic arithmetic with remainders etc etc

#include <iostream> //pre-processor directive

using namespace std; //std library

int main() //it starts with the main 1st
{
    int x = 8 * 4;
    int y = 21 % 7; // %-gives remainder of division
    int z = 22 * (4 + 2) + 8 / 2 ; // brackets gets done first obv.
    cout << x <<endl;
    cout << y <<endl;
    cout << z;
    return 0; //to tell that program ran fine
}