C++ clock
C++で時間計測したいときはclock()が使えます。
参考:clock
コードサンプル
#include <bits/stdc++.h>#include <unistd.h>using namespace std;
int main() { cout << "CLOCKS_PER_SEC: " << CLOCKS_PER_SEC << endl; clock_t start = clock(); cout << "start: " << start << endl; sleep(2); clock_t end = clock(); cout << "end: " << end << endl; printf("%.4f sec\n", (double)(end - start) / CLOCKS_PER_SEC);}結果
CLOCKS_PER_SEC: 1000start: 3end: 20052.0020 sec