譚暐霖

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {  
   
6.     re:
   
7.     int x, y, tmp;
   
8.     cout<<"Please enter a number: ";
   
9.     cin>>x;
   
10.     cout<<"Please enter another number: ";
    
11.     cin>>y;
    
12.     cout<<"Before the change"<<endl;
    
13.     cout<<"x= "<<x<<" y= "<<y<<endl;
    
14.     tmp=x;
    
15.     x=y;
    
16.     y=tmp;
    
17.     cout<<"After the change"<<endl;
    
18.     cout<<"x= "<<x<<" y= "<<y<<endl;
    
19.     goto re;
    
20.     return 0;   
    
21. }

複製代碼