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讀書時貪得意寫的, 用類似原理, 現在用來做 console program waiting signal.

#include <stdio.h>
#include <termios.h>
#include <unistd.h>

#define COLOR "^[[%d;%dm"
#define POSITION "^[[%d;%df"
#define CLEAR "^[[2J"

struct termios save_termios;

main()
{
        op();
        printf(CLEAR);
}

tty_reset()
{
        if (tcsetattr(STDIN_FILENO,TCSAFLUSH,&save_termios) < 0)
           exit(-1);
        return(0);
}

tty_cbreak(work,times)
int work;
int times;
{
        int i;
        char c;
        struct termios buf;

        if (tcgetattr(STDIN_FILENO,&save_termios)<0)
           exit(0);
        buf=save_termios;
        buf.c_lflag &= ~(ECHO | ICANON);
        buf.c_cc[VMIN] = work;
        buf.c_cc[VTIME] = times;
        if (tcsetattr(STDIN_FILENO,TCSAFLUSH,&buf) < 0)
           exit(-1);
        return(0);
}

op()
{
        int work,times;
        int x,y,z;
        int cr=30;
        int ef=1;
        char c=0;

        printf(CLEAR);

        printf(POSITION,22,5);
        printf("^[[5;37mPress any Key to continue!");

        work=0;times=1;
        tty_cbreak(work,times);

        while (c==0)
        {
                read(STDIN_FILENO,&c,1);
                y=1;
                for (x=6;x<15;x++)
                {
                    printf(POSITION,x,y++);
                    if (ef==0)ef=1;else ef=0;
                    if (cr==38)cr=31;
                    printf(COLOR,ef,cr++);
                    printf("VVV");
                }
                for (x=15;x>5;x--)
                {
                    printf(POSITION,x,y++);
                    if (ef==0)ef=1;else ef=0;
                    if (cr==38)cr=31;
                    printf(COLOR,ef,cr++);
                    printf("VVV");
                }

           for (x=0;x<10000;x++)
               for (y=0;y<50;y++)
                ;
        }
        tty_reset();
}