这个程序哪里不对?select()函数对吗?
//******************************************************//
#include "stdio.h"
#include "time.h"
#include "winsock.h"
#pragma comment (lib,"ws2_32.lib")
int main()
{
char ch;
int result;
//fd_set readset,tmpset;
struct timeval timeout;
scanf("%c",&ch);
timeout.tv_sec =1;
timeout.tv_usec =500000;
result=select(0, NULL ,NULL, NULL,&timeout);
if(result>0)
{
printf("ok!");
return 0;
}
printf("%c\n",ch);
return 0;
}