Answer 1

If you will input the values of x, y and z in the code then is:

#include <iostream>
using namespace std;

int main () {
int x = 0;
int y = 0;
int z = 0;
int w = 0;
int p = w + z / y - z;

cout << p << endl;
}

If inputed by the console:

#include <iostream>
using namespace std;

int main () {
int x = 0;
int y = 0;
int z = 0;
int w = 0;
int p = w + z / y - z;

cin >> x;
cin >> y;
cin >> z;
cin >> w;
cout << p << endl;
}
(Idk if the w was a typo so I decided to just put it in anyways)
Hope this helps atleast a little