1 #include<stdio.h> 2 #include<stdlib.h> 3 #include<string.h> 4 #include<termios.h> 5 #include<term.h> 6 #include<curses.h> 7 #include<unistd.h> 8 static struct termios initial_settings,new_settings; 9 static int peek_character=-1;10 void init_keyboard();11 void close_keyboard();12 int check_keyboard();13 int readch();14 int main()15 {16     int ch=0;17     init_keyboard();18     while(ch!=‘q‘)19     {20         printf("looping\n");21         sleep(1);    22         if(check_keyboard())23         {24         ch=readch();25     ///    scanf("%c",&ch);26         printf("You hit %c\n",ch);27         }28     }29     close_keyboard();30     exit(0);31 }32 33 int readch()34 {35     char ch;36     if(peek_character!=-1)37     {38         ch=peek_character;39         peek_character=-1;40         return ch;41     }42     read(0,&ch,1);43     return ch;44 } 45 46 void init_keyboard()47 {48     tcgetattr(0,&initial_settings);49     new_settings=initial_settings;50     new_settings.c_lflag &=~ICANON;51     new_settings.c_lflag &=~ECHO;52     new_settings.c_lflag &=~ISIG;53     new_settings.c_cc[VTIME]=0;54     new_settings.c_cc[VMIN]=1;55     tcsetattr(0,TCSANOW,&new_settings);56 }57 58 void close_keyboard()59 {60     tcsetattr(0,TCSANOW,&initial_settings);61 }62 63 int check_keyboard()64 {65     char ch;66     int nread;67     if(peek_character!=-1)68     {69         return 1;70     }71     new_settings.c_cc[VMIN]=0;72     tcsetattr(0,TCSANOW,&new_settings);73     nread=read(0,&ch,1);74     new_settings.c_cc[VMIN]=1;75     tcsetattr(0,TCSANOW,&new_settings);76     if(nread==1)77     {78     peek_character=ch;79     return 1;80     }81     return 0;82 }