一个wget实现的多进程简单投票器

#include<iostream>
#include<stdio.h>
#include<signal.h>
using std::cin;
using std::cout;
using std::endl;
#include<stdlib.h>
#include<unistd.h>
#include<sys/types.h>
#include<sys/wait.h>
void sig(int);
int main(){
	signal(SIGCHLD,sig);
	cout<<"start :"<<getpid()<<endl;
	//sleep(10);
	cout<<"请选择投个几号(1-16)：";
	int ch=1;
	cin>>ch;
	int count=0;
	cout<<"请输入要投的票数:";
	cin>>count;
	ch=87+ch;
	char cmd[100];
	sprintf(cmd,"wget --post-data="voteId[]=%d&Submit=" http://www.qdnmg.com/vote/vote.php?action=vote&cid=13",ch);
	printf("%sn",cmd);
	for(int i=0;i<count;i++){
		if(fork()==0){
		system(cmd);               
		return 0;
		break;
		}
	}
	sleep(10);
	cout<<"投票成功"<<endl;
	//cout<<"child:"<<ch_pid<<"was killed"<<endl;
	return 0;
}
void sig(int signal){
	int ch_pid;
	int sta;
	while(ch_pid=(waitpid(-1,&sta,0)>0)){
	cout<<"child "<<ch_pid<<" was killed"<<endl;
	sleep(3);
	system("rm vote.php*");
}
	return;
}