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2009-07-26 15:50
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ÏÂÃæÀ´·ÖÎöÏÂÔ­Òò¡£
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int a=3,b=4;
void exchange(int x,int y)
...{  
          int temp;
           temp=a;a=b;b=temp;   //ÊÔͼ½»»»a,b
}
exchange(a,b);
cout<<a<<" "<<b<<endl;
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Òª½»»»a,b,Ö»Ðè¸Ä±äº¯Êýexchange£¬´«µÝa,bµÄµØÖ·£¬ÈçÏ£º
void exchange(int *x,int *y)
{
         int temp;
          temp=*x;*x=*y;*y=temp;
}
   exchange(&a,&b);
   cout<<a<<" "<<b<<endl;
  
ÕâÑù£¬a,b¾Í³É¹¦½»»»ÁË¡£ÎªÊ²Ã´ÄØ£¿ÏÂÃæÔÙ˵¡£
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ÔÙ¿´Á½¶Î´úÂ룺
#include<iostream>
using namespace std;
void test_point(int *p)
...{
     int a=3;
      p=&a;   // ²»Í¬Ö®´¦
}
int main()
...{
     int x=4;
     int *p1=&x;
      test_point(p1);
      cout<<*p1<<endl;
         return 0;
}
   
   
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#include<iostream>
using namespace std;
void test_point(int *p)
...{
     int a=3;
   &nb


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