我們來看到C++要如何計算程式碼的執行時間呢 ~

學習目標: 計算程式碼執行時間的實務

學習難度: ☆☆☆

#include <iostream>

#include <chrono> 

using namespace std;

using namespace std::chrono; 

int main()
{	
	auto start=high_resolution_clock::now(); //開始  

    for (int i = 0; i < 10000; ++i)
    {
		cout<<"123"<<endl;
    }
    
    auto stop = high_resolution_clock::now(); //結束 
    
    auto duration = duration_cast<milliseconds>(stop - start);
    
    cout <<"Time taken by" <<duration.count() <<"milliseconds"<< endl; //豪秒 
    
    return 0;   
} 

參考資料:

https://www.geeksforgeeks.org/measure-execution-time-function-cpp/