Changing terminal settings so `getc` doesn't wait for the user to press ENTER

getc.c

// Compile with: cc -Wall -otermio termio.c

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

int main(void) {
    static struct termios oldt, newt;

    /* Get current termio settings */
    tcgetattr( STDIN_FILENO, &oldt);

    /* We only want to disable ICANON mode (don't wait for \n) */
    newt = oldt;
    newt.c_lflag &= ~(ICANON);

    tcsetattr( STDIN_FILENO, TCSANOW, &newt);

    /* Grab a character */
    char c = getc(stdin);
    printf("\nPressed: %c\n", c);

    /* Restore old termio settings */
    tcsetattr( STDIN_FILENO, TCSANOW, &oldt);

    return 0;
}