시간측정

random_device rd;

default_random_engine gen(rd());

uniform_int_distribution<int> dist(0, 10 * 1000 * 1000);

chrono::time_point<chrono::system_clock> startTime = chrono::system_clock::now();

chrono::time_point<chrono::system_clock> endTime = chrono::system_clock::now();

chrono::milliseconds timeDiff = chrono::duration_cast<chrono::milliseconds>(endTime - startTime);

double T = timeDiff.count();

printf("Runtime = %d ms\n", (int)T);