话说，仅仅是一个键盘检测就好麻烦。我还是懂的太少了。。。

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <termios.h>
#include <unistd.h>
#include <string.h>#define key_ESC 27void init_keyboard();void close_keyboard();int kbhit();int readch(); /* 相关函数声明 */static struct termios initial_settings, new_settings;static int peek_character = -1;         /* 用于测试一个按键是否被按下 *//* 检测键盘按键的函数 */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);
}/* 用来接收按下的按键，并peek_character = -1恢复状态 */int readch(){char ch;if ( peek_character != -1 ){ch = peek_character;peek_character = -1;return(ch);}read( 0, &ch, 1 );return(ch);
}/* 配置终端函数 */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 main(int argc, char const *argv[])
{int ch = 0;init_keyboard();printf( "You can put ESC to quit!\n" );while ( ch != 27 ){if ( kbhit() ){ch = readch();if ( ch != 27 )printf( "You put %c ! Only put ESC can quit! \n", ch );}}close_keyboard();return 0;
}

参考：

1. http://blog.163.com/liang_w_yan/blog/static/210657088201332444016981/