Unbuffered input.

[kcode]

Hello,
I want a function which on taking a character transfers the control to next line without pressing enter. Something like getch(), which is not included in glibc++(if I'm correct).

Thanks

[dwhitney67]

I've seen your question asked many times before, and answered too!

Either the search engine on the Ubuntu Forums site is not working, or user's are failing to perform adequate research before posting here.

Here's an implementation for getch() that sets up the input stream to be non-blocking; you can capture one character at a time.


#include <stdio.h>
#include <termios.h>
#include <unistd.h>
#include <string.h>

int getch()
{
int ch;
struct termios old;
struct termios tmp;

if (tcgetattr(STDIN_FILENO, &old))
{
return -1;
}

memcpy(&tmp, &old, sizeof(old));

tmp.c_lflag &= ~ICANON & ~ECHO;

if (tcsetattr(STDIN_FILENO, TCSANOW, (const struct termios*) &tmp))
{
return -1;
}

ch = getchar();

tcsetattr(STDIN_FILENO, TCSANOW, (const struct termios*) &old);

return ch;
}

[kcode]

Either the search engine on the Ubuntu Forums site is not working, or user's are failing to perform adequate research before posting here.


Was in hurry, never thought. I apologize.