指標 (四)

tonyh

利用傳統方式, 將變數x與變數y的值對調, 比較與指標法的差異.
指標法:

傳統法:

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.      int x=10, y=5, tmp;
   
7.      cout<<"[對調前]"<<endl;
   
8.      cout<<"x="<<x<<endl;
   
9.      cout<<"y="<<y<<endl;
   
10.      cout<<"變數x的位址: "<<&x<<endl;
    
11.      cout<<"變數y的位址: "<<&y<<endl<<endl;
    
12.      tmp=x;
    
13.      x=y;
    
14.      y=tmp;
    
15.      cout<<"[對調後]"<<endl;
    
16.      cout<<"x="<<x<<endl;
    
17.      cout<<"y="<<y<<endl;
    
18.      cout<<"變數x的位址: "<<&x<<endl;
    
19.      cout<<"變數y的位址: "<<&y<<endl<<endl;
    
20.      system("pause");
    
21.      return 0;
    
22. }

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林宇翔

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.      int x = 10, y = 5,tmp;
   
7.      
   
8.      cout<<"對調前  "<<x<<endl;
   
9.      cout<<"x=:  "<<*xPtr<<endl;
   
10.      cout<<"y=:  "<<*yPtr<<endl;
    
11.      cout<<"變數x的地址"<<xPtr<<endl;
    
12.      cout<<"變數y的地址"<<yPtr<<endl;
    
13.      tmp = x;
    
14.      x=y;
    
15.      y=tmp;
    
16.       
    
17.      cout<<"對調後  "<<x<<endl;
    
18.      cout<<"x=:  "<<x<<endl;
    
19.      cout<<"y=:  "<<y<<endl;
    
20.      cout<<"變數x的地址"<<&x<<endl;
    
21.      cout<<"變數y的地址"<<&y<<endl;
    
22.      system("pause");
    
23.      return 0;
    
24. }

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張峻瑋

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.     int x=10,y=5,tmp;
   
7.     cout<<"[對調前]"<<endl;
   
8.     cout<<"x="<<x<<endl;
   
9.     cout<<"y="<<y<<endl;
   
10.     cout<<"變數x的位址: "<<&x<<endl;
    
11.     cout<<"變數y的位址: "<<&y<<endl<<endl;
    
12.     tmp=x;
    
13.     x=y;
    
14.     y=tmp;
    
15.     cout<<"[對調後]"<<endl;
    
16.     cout<<"x="<<x<<endl;
    
17.     cout<<"y="<<y<<endl;
    
18.     cout<<"變數x的位址: "<<&x<<endl;
    
19.     cout<<"變數y的位址: "<<&y<<endl<<endl;
    
20.     system("pause");   
    
21.     return 0;
    
22. }

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李允軒

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. 
   
5. int main()
   
6. {
   
7.     int x = 10, y = 5, tmp;
   
8.     cout << "[對調前]" << endl;
   
9.     cout << " x = :" << x << endl;
   
10.     cout << " y = :" << y << endl;
    
11.     cout << "變數x的地址 :" << &x << endl;
    
12.     cout << "變數y的地址 :" << &y << endl;
    
13.     tmp = x;
    
14.     x = y;
    
15.     y = tmp;
    
16.     cout << "[對調後]" << endl;
    
17.     cout << " x = :" << x << endl;
    
18.     cout << " y = :" << y << endl;
    
19.     cout << "變數x的地址 :" << &x << endl;
    
20.     cout << "變數y的地址 :" << &y << endl;
    
21.     system("pause");
    
22.     return 0;
    
23. }

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周雍程

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.     int x=10, y=5, tmp;
   
7.     cout<<"[對調前]"<<endl;
   
8.     cout<<"x="<<x<<endl;
   
9.     cout<<"y="<<y<<endl;
   
10.     cout<<"變數x的位址: "<<&x<<endl;
    
11.     cout<<"變數y的位址: "<<&y<<endl;
    
12.     tmp=x;
    
13.     x=y;
    
14.     y=tmp;
    
15.     cout<<"[對調後]"<<endl;
    
16.     cout<<"x="<<x<<endl;
    
17.     cout<<"y="<<y<<endl;
    
18.     cout<<"變數x的位址: "<<&y<<endl;
    
19.     cout<<"變數y的位址: "<<&x<<endl;
    
20.     system("pause");  
    
21.     return 0;        
    
22. }

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劉得旗

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.     int x=10, y=5,tmp;
   
7.     cout<<"[對調前]"<<endl;
   
8.     cout<<"x="<<x<<endl;
   
9.     cout<<"y="<<y<<endl;
   
10.     cout<<"變數x的位址:"<<&x<<endl;
    
11.     cout<<"變數y的位址:"<<&y<<endl;
    
12.     tmp=x;
    
13.     x=y;
    
14.     y=tmp;
    
15.     cout<<endl;
    
16.     cout<<"[對調後]"<<endl;
    
17.     cout<<"x="<<x<<endl;
    
18.     cout<<"y="<<y<<endl;
    
19.     cout<<"變數x的位址:"<<&x<<endl;
    
20.     cout<<"變數y的位址:"<<&y<<endl;
    
21.     system("pause");
    
22.     return 0;
    
23. }

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張郁庭

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.      int x=10, y=5, tmp;
   
7.      cout<<"[對調前]"<<endl;
   
8.      cout<<"x="<<x<<endl;
   
9.      cout<<"y="<<y<<endl;
   
10.      cout<<"變數x的位址: "<<&x<<endl;
    
11.      cout<<"變數y的位址: "<<&y<<endl<<endl;
    
12.      tmp=x;
    
13.      x=y;
    
14.      y=tmp;
    
15.      cout<<"[對調後]"<<endl;
    
16.      cout<<"x="<<x<<endl;
    
17.      cout<<"y="<<y<<endl;
    
18.      cout<<"變數x的位址: "<<&x<<endl;
    
19.      cout<<"變數y的位址: "<<&y<<endl<<endl;
    
20.      system("pause");
    
21.      return 0;
    
22. }

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張彥承

1. #include<iostream>
   
2. #include<cstdlib>
   
3. #include<string>
   
4. using namespace std;
   
5. int main()
   
6. {
   
7.     int x=10,y=5,tmp;
   
8.     cout<<"[對調前]"<<endl;
   
9.     cout<<"x= "<<x<<endl;
   
10.     cout<<"y= "<<y<<endl;
    
11.     cout<<"變數x的位址: "<<&x<<endl;
    
12.     cout<<"變數y的位址: "<<&y<<endl;
    
13.     tmp=x;
    
14.     x=y;
    
15.     y=tmp;
    
16.    cout<<"[對調前]"<<endl;
    
17.     cout<<"x= "<<x<<endl;
    
18.     cout<<"y= "<<y<<endl;
    
19.     cout<<"變數x的位址: "<<&x<<endl;
    
20.     cout<<"變數y的位址: "<<&y<<endl;
    
21.     system("pause");     
    
22.     return 0;   
    
23. }

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劉得恩

1. #include<iostream>
   
2. #include<cstdlib>
   
3. using namespace std;
   
4. int main()
   
5. {
   
6.      int x=10,y=5, tmp;
   
7.      
   
8.       
   
9.      
   
10.            cout<<"[對調前]"<<endl;
    
11.         cout<<"x="<<x<<endl;
    
12.     cout<<"y="<<y<<endl;
    
13.     cout<<"變數x的位址: "<<&x<<endl;
    
14.     cout<<"變數y的位址: "<<&y<<endl<<endl;
    
15.     tmp=x;
    
16.     x=y;
    
17.     y=tmp;
    
18.    
    
19.     cout<<"[對調後]"<<endl;
    
20.     cout<<"x="<<x<<endl;
    
21.     cout<<"y="<<y<<endl;
    
22.     cout<<"變數x的位址: "<<&x<<endl;
    
23.     cout<<"變數y的位址: "<<&y<<endl<<endl;
    
24. 
    
25.      
    
26.      system("pause");
    
27.      return 0;
    
28. }

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