conio.h -> getch() & clrscr()

system("cls");

system("clear");

#include <stdio.h>

int main ()
{
  char c;
  puts ("Enter text. Include a dot ('.') in a sentence to exit:");
  do {
    c=getchar();
    putchar (c);
  } while (c != '.');
  return 0;
}

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

struct termios g_term_conf;

int unix_getch()
{
  struct termios newt;
  int ch;

  newt = g_term_conf;
  newt.c_lflag &= ~(ICANON);
  tcsetattr(STDIN_FILENO, TCSANOW, &newt);
  ch = getchar();
  tcsetattr(STDIN_FILENO, TCSANOW, &g_term_conf);
  return ch;
}

int main(void)
{
  int i = 0;
  char line[21] = {0};
  tcgetattr(STDIN_FILENO, &g_term_conf);

  printf("Hello world!\n");
  while (i < 20)
  {
    line[i] = unix_getch();
    ++i;
  }

  printf("\nLa ligne vaut %s\n", line);
  return 0;
}