What is my mistake? (C++)

Question

int a = 20, b = 10;
int tong = a + b;
int hieu = a - b;
int tich = a * b;
int thuong = a / b;
cout << tong << " " << hieu << " " << tich << " " << thuong << endl;

Answer 1

The code is missing fundamental C++ program structure.

#include <iostream>
using namespace std;

int main() {

//insert your code here

return 0;
}

Answer 2

The code works fine. Try to read the task description carefully again. Here will be also needed the description for a help.

Answer 3

tks everyone, i did it