#include <stdio.h>
#include <termios.h>
int main()
{
char s;
// FILE *in;
// FILE *out;
struct termios initial_settings,new_settings;
// in=fopen("/dev/tty","r");
// out=fopen("/dev/tty","w");
tcgetattr(fileno(stdin),&initial_settings);//保存原来的设置
new_settings=initial_settings; //开始新终端控制设置
new_settings.c_lflag &= ~ICANON;
new_settings.c_lflag &= ~ECHO;
new_settings.c_cc[VMIN] = 1;
new_settings.c_cc[VTIME] = 0;
if(tcsetattr(fileno(stdin),TCSANOW,&new_settings)!=0) //应用新的设置
fprintf(stderr,"coutld not set attributes\n");
do
{
s=fgetc(stdin);
fprintf(stdout,"\nyou input %c\n",s);
}while(s!='q');
tcsetattr(fileno(stdin),TCSANOW,&initial_settings);//返回原来的设置
return 0;
}