#include<bits/stdc++.h>
int main(int argc, char const *argv[])
{
	std::string host, message = "";
	if(argc > 2)
	{
		if(strcmp(argv[1], "-host") == 0)
		{
			host = argv[2];
			if(strcmp(argv[3], "-msg") == 0)
			{
				for(int i = 4; i < argc; i++)
					message = message + argv[i];
			}
			else
			{
				printf("%s [-host host -msg message]\n   -host host:who need this message\n   -msg message:what message do you need send", argv[0]);
				return 0;
			}
				
		}
		else
		{
			printf("%s [-host host -msg message]\n   -host host:who need this message\n   -msg message:what message do you need send", argv[0]);
			return 0;
		}
	}
	else
	{
		printf("HOST:");
		std::cin >> host;
		printf("MESSAGE:");
		std::cin >> message;
	}
	system(("msg /server:" + host + " * \"" + message + "\"").c_str());
} 

发送消息的程序，HOST可以是IP或主机名