1 #include
     
       2 using namespace std; 3  4 void swap(int &a,int &b) 5 { 6     if(a==b) 7         return; 8     a=a+b; 9     b=a-b;10     a=a-b;11 }12 13 int qsort(int *array,int low,int high)14 {15     int key=array[low];16     cout<<"key="<
      
       <
       
        = array[low])24             low++;25         swap(array[low],array[high]);26     }27     cout<<"low="<
        
         <
        
       
      
     

g++ -std=c++11编译