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;
}

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

select doesn't READ stdin, it just tells you that there is something there.

You need to call some actual read function to consume data.