内存拷贝，实现程序自身代码复制。

#include <windows.h> #include <iostream> #include <stdio.h>using namespace std;#define BUFFER_SIZE 4096 void *MemAddr = NULL;int _tmain(int argc, _TCHAR* argv[]){　　copyself();    getchar();    return 0; }

void copyself( ) {     MemAddr = VirtualAlloc(NULL, BUFFER_SIZE, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);     memcpy(MemAddr, (void *)_tmain, BUFFER_SIZE); }