请教static变量问题
时间:2010-06-30
来源:互联网
- #include <stdio.h>
- #include <termios.h>
- #include <term.h>
- #include <curses.h>
- #include <unistd.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);
- }
-
- 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;
- }
作者: sherman-zhang 发布时间: 2010-06-30
字符串在哪?
作者: wmmy2008 发布时间: 2010-06-30
你关心的是 static 还是 把char型赋值给int型?
作者: donglongchao 发布时间: 2010-06-30
回复 donglongchao
两个都关心,可以帮忙讲解一下吗?谢谢!
两个都关心,可以帮忙讲解一下吗?谢谢!
作者: sherman-zhang 发布时间: 2010-06-30
回复 wmmy2008
应该是字符型变量ch。ch 被定义为char。
应该是字符型变量ch。ch 被定义为char。
作者: sherman-zhang 发布时间: 2010-06-30
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