C++ - 当 x = 1.4 和 y = 5.8 时，算法检查 (x * y + x + y) / (xy) 的值

Question

This is the code. When I run it, nothing appears, just darkness. Blank. I'm a beginner, and I don't really know too much about coding. Any help would be appreciated.

#include <iostream>
using namespace std;

int main()

float x;
float y;
float Wynik;
x = 1.4;
y = 5.8;
Wynik = (x * y + x + y) / (x-y);
return 0;

}

Answer 1

Because you aren't printing out anything in your console. To print your results, use std::cout << Wynik; . And also, you have an error in your main function, it's supposed to be like this:

int main() {
    // Your code goes here
}

Also, using namespace std; is considered bad practice since it can lead to conflicts with your other libraries, but you'll read that in a book.

Answer 2

#include <iostream>
using namespace std;

int main() {

    float x;
    float y;
    float Wynik;
    x = 1.4;
    y = 5.8;
    Wynik = (x * y + x + y) / (x-y);
    cout << Wynik << endl; // This will print your output
    return 0;
}

Answer 3

    #include <iostream>

    int main()
    {
      const float x = 1.4;
      const float y = 5.8;
      std::cout << (x * y + x + y) / (x - y) << std::endl; // This will print your output
      return 0;
    }