Thread: Problem Reading from console using select

Code:

/*
** select.c -- a select() demo
*/

#include <stdio.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <termios.h>
#include <stropts.h>

#define STDIN 0  // file descriptor for standard input

int main(void)
{
    struct timeval tv;
    fd_set readfds;
    fd_set master;

    tv.tv_sec = 5;
    tv.tv_usec = 500000;
    //struct termios term;
    
    FD_ZERO(&master);
    FD_ZERO(&readfds);
    FD_SET(STDIN_FILENO, &master);
    
    // don't care about writefds and exceptfds:
    while(1){
    
    readfds=master;
    /*tcgetattr(STDIN, &term);
    term.c_lflag &= ~ICANON;
    tcsetattr(STDIN, TCSANOW, &term);
    setbuf(stdin, NULL);*/
    select(STDIN+1, &readfds, NULL, NULL, NULL);
   

    if (FD_ISSET(STDIN_FILENO, &readfds)){
        printf("A key was pressed!\n");
        //FD_CLR();
        fflush(stdout);
    }
    else
        printf("Timed out.\n");
    }
    return 0;
}

why prog goes in infinite loop after 1st enter? i want to read single lines just like gets()