´´½¨¿Õ¼ä

ÂäÒ¶ÇïÓê

#include<stdlib.h>
#include<iostream.h>
class shaoyuan{
public:
    shaoyuan(int y){ x=y;
        cout<<"begin\n";
    }   void sy(){cout<<"adfasdfas"<<"   "<<x<<endl;}
    ~shaoyuan(){
        cout<<"end\n";
    }private: int x;
};
void main(){
    int *p=(int *)malloc(sizeof(int));
         shaoyuan *p1=(shaoyuan*)malloc(sizeof(shaoyuan(10)));
    p1->sy()£» free (p1);
}
ÇëÎÊΪʲôÔÚÖ´ÐÐshaoyuan *p1=(shaoyuan*)malloc(sizeof(shaoyuan(10)));ʱ²»»áÖ´Ðй¹Ô캯Êý¶øÇÒÔÚÊÍ·Å¿Õ¼äµÄʱºòÒ²²»»áÖ´ÐÐÎö¹¹º¯Êý£¬»¹ÓоÍÊÇp1->sy()£» Êä³öµÄxµÄÖµ²»ÊÇ10£¬Ð»Ð»£¡£¡£¡