What is the equivalent to getch getche in Linux

Question

I am not able to find the equivalent header file for conio h in Linux   Is there any option for getch    amp  getche   function in Linux   I want to make a switch case base menu where the user will give his option just by pressing one key  amp  process should be moved ahead  I don t want to let user to press ENTER after pressing his choice

User · Answer

As said above getch   is in the ncurses library  ncurses has to be initialized  see i e  getchar   returns the same value  27  for up and down arrow keys for this

User · Answer

You can use the curses h library in linux as mentioned in the other answer  You can install it in Ubuntu by   sudo apt-get update sudo apt-get install ncurses-dev  I took the installation part from here

User · Answer

include  lt termios h gt   include  lt stdio h gt   static struct termios old  current      Initialize new terminal i o settings    void initTermios int echo       tcgetattr 0   amp old      grab old terminal i o settings      current   old     make new settings same as old settings      current c lflag  amp    ICANON     disable buffered i o      if  echo          current c lflag    ECHO     set echo mode        else         current c lflag  amp    ECHO     set no echo mode          tcsetattr 0  TCSANOW   amp current      use these new terminal i o settings now          Restore old terminal i o settings    void resetTermios void       tcsetattr 0  TCSANOW   amp old         Read 1 character - echo defines echo mode    char getch  int echo       char ch    initTermios echo     ch   getchar      resetTermios      return ch        Read 1 character without echo    char getch void       return getch  0         Read 1 character with echo    char getche void       return getch  1         Let s test it out    int main void      char c    printf   getche example  please type a letter        c   getche      printf   nYou typed   c n   c     printf   getch example  please type a letter         c   getch      printf   nYou typed   c n   c     return 0      Output    getche example  please type a letter  g You typed  g  getch example  please type a letter    You typed  g

User · Answer

There is a getch   function in the ncurses library   You can get it by installing the ncurses-dev package

User · Answer

include  lt unistd h gt   include  lt termios h gt   char getch void        char buf   0      struct termios old    0       fflush stdout       if tcgetattr 0   amp old   lt  0          perror  tcsetattr          old c lflag  amp    ICANON      old c lflag  amp    ECHO      old c cc VMIN    1      old c cc VTIME    0      if tcsetattr 0  TCSANOW   amp old   lt  0          perror  tcsetattr ICANON        if read 0   amp buf  1   lt  0          perror  read          old c lflag    ICANON      old c lflag    ECHO      if tcsetattr 0  TCSADRAIN   amp old   lt  0          perror  tcsetattr  ICANON        printf   c n   buf       return buf       Remove the last printf if you don t want the character to be displayed

User · Answer

I suggest you use curses h or ncurses h these implement keyboard management routines including getch    You have several options to change the behavior of getch  i e  wait for keypress or not

[c] What is the equivalent to getch() & getche() in Linux?

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