洪榮辰

1. #include<iostream>
   
2. #include<cstdlib>
   
3. #include<ctime>
   
4. using namespace std;
   
5. int main()
   
6. {
   
7.     int n1, n2, ans, ansc;
   
8.     float start, t1, t2;
   
9.     srand(time(NULL));
   
10.     n1=rand()%49+51;
    
11.     n2=rand()%49+51;
    
12.     ansc=n1+n2;
    
13.     start=clock();
    
14.     cout<<n1<<" + "<<n2<<" = ";
    
15.     t1=clock()-start;
    
16.     cin>>ans;
    
17.     if(ans==ansc)
    
18.         cout<<"答對了! 本題花費"<<clock()-t1<<"毫秒思考!"<<endl;
    
19.     else
    
20.         cout<<"答錯了! 本題花費"<<clock()-t1<<"毫秒思考!"<<endl;
    
21.     system("pause");
    
22.     return 0;
    
23. }

複製代碼