ввод из консоли

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

int main(void)
    {
    struct termios ti;
    int c;

    tcgetattr(0, &ti);
    ti.c_lflag &= ~ICANON & ~ECHO;
    tcsetattr(0, TCSANOW, &ti);

    printf("Press Ctrl-D to exit\n");

    while((c = getchar()) != 4)
        printf("Got: '%c' (%d)\n", c, c);

    ti.c_lflag |= ICANON | ECHO;
    tcsetattr(0, TCSANOW, &ti);

    return 0;
    }

    ti.c_lflag &= ~ICANON & ~ECHO;

...
    ti.c_lflag &= (unsigned)(~ICANON);
    ti.c_lflag &= (unsigned)(~ECHO);
...