clock_t start;
    clock_t end;
    double cpu_time_used;
	float getal = 0;

	start = clock();
	for(int i=0; i<100000000; i++) {
		getal += 1;
	}
	end = clock();
	cpu_time_used = (((double) (end-start)) / CLOCKS_PER_SEC) / 100000000;

	printf("Addition time: %e\n", cpu_time_used);