cpp_stuff/courses/der-komplettkurs-zur-modernen-c-programmierung/_Exercise1/Exercise/exercise.cc

#include <iostream>
#include <string>

#include "exercise.h"

void mod_cross_sum(int I, int J)
{
    for (int i = 0; i < I; i++)
    {
        for (int j = 0; j < J; j++)
        {
           bool is_even = (i + j) % 2 == 0;
              std::cout << "i: " << i  <<", j: " << j << " := "  << (is_even ? "Gerade!" : "Ungerade!") << std::endl;
        }

    }
}