在linux下面实现检测按键（Linux中kbhit（）函数的实现）
//在linux下面实现检测按键（Linux中kbhit（）函数的实现）
#include <stdio.h>#include <termios.h>#include <term.h>#include <curses.h>#include <unistd.h>#include <stdlib.h>static struct termios initial_settings, new_settings;static int peek_character = -1;void init_keyboard();void close_keyboard();int kbhit();int readch();int main(){ int ch = 0; init_keyboard(); while(ch != 'q') { printf("looping\n"); sleep(1); if(kbhit()) { ch = readch(); printf("you hit %c\n",ch); } } close_keyboard(); exit(0);return 0;}void init_keyboard(){ tcgetattr(0,&initial_settings); new_settings = initial_settings; new_settings.c_lflag &= ~ICANON; new_settings.c_lflag &= ~ECHO; new_settings.c_lflag &= ~ISIG; new_settings.c_cc[VMIN] = 1; new_settings.c_cc[VTIME] = 0; tcsetattr(0, TCSANOW, &new_settings);}void close_keyboard(){ tcsetattr(0, TCSANOW, &initial_settings);}int kbhit(){ char ch; int nread; if(peek_character != -1) return 1; new_settings.c_cc[VMIN]=0; tcsetattr(0, TCSANOW, &new_settings); nread = read(0,&ch,1); new_settings.c_cc[VMIN]=1; tcsetattr(0, TCSANOW, &new_settings);if(nread == 1) { peek_character = ch; return 1;}return 0;}int readch(){ char ch; if(peek_character != -1) { ch = peek_character; peek_character = -1; return ch; } read(0,&ch,1); return ch;}