Question

I wrote this, but when running it, the console just sits at “Running…” and won’t really do anything, at least that I can see. I am kind of at a loss here as I can’t think of anything else to do.

#include <iostream>
#include <cmath>
#include <cstdlib>

int main(void) {
    int count = 0;
    do {

        int a = 1;
        int b = 2;
        int c = 3;
        int total;

        for (a=1;a<b;a++) {
            for (b=2;b<c;b++) {
                for (c=3;c<=1000;c++) {
                    total = a+b+c;

                    if (total == 1000 && a*a + b*b == c*c) {
                        std::cout << a << ", " << b << ", " << c;

                    }
                }
            }
        }



        count++;

    } while(count < 1000);  
    return 0;
    std::cin.get();
}

Answer 1

You might not see any output because your terminal is line-buffered and you never write a line break or flush the stream. To fix this you could add std::endl to your output line:

std::cout << a << ", " << b << ", " << c << std::endl;

This way you should see all triples as soon as they are found, but the program will still take a long time to complete. It might even take a long time till any results are found. You could speed the program up by avoiding some of the nested loops.