1  int  swap  (  int  &  a  ,  int  &  b  )  
2  {  
3  int  temp  ;  
4  temp  =  a  ;  
5  a  =  b  ;  
6  b  =  temp  ;  
7  return  ^_^;  
8  }  
9  int  main  (  )  
10  {  
11  int  i  ,  j  ;  
12  cin  >>  i  >>  j  ;  
13  swap  (  i  ,  j  )  ;  
14  cout  <<  " 交換后i為：" <<  i  <<  endl  ;  
15  <<  " j為：" <<  j  <<  endl  ;  
16  ^_^;  
17  return  0  ;  
18  }