Текст программы:
#include "dos.h"
#include "conio.h"
#include "stdio.h"
#define X1 20
#define Y1 15
#define X2 60
#define Y2 20
int code();
int keypressed();
int main()
{
int x = 5, y = 5;
textbackground(BLACK);
textcolor(CYAN);
clrscr();
gotoxy(x, y);
cprintf("Press F5 to go left, F10 to go right");
window(X1, Y1, X2, Y2);
textbackground(BLUE);
textcolor(BLACK);
clrscr();
int ch = 0;
x = 1;
y = 1;
int left = 0;
do
{
do
{
clrscr();
if ((left == 1) && ((x - 1) >= 0))
x -= 1;
if ((left == 0) && ((x + 1) <= (X2 - X1)))
x += 1;
gotoxy(x, y);
putch('*');
delay(100);
} while (keypressed() == 0);
ch = code();
switch (ch)
{
case 63: //F5
left = 1;
break;
case 68: //F10
left = 0;
break;
}
} while (ch != 27);
return 0;
}
int keypressed()
{
union REGS r;
r.h.ah = 0x0B;
int86(0x21, &r, &r);
return r.h.al;
}
int code()
{
union REGS r;
r.h.ah = 0x7;
int86(0x21, &r, &r);
return r.h.al;
}
Пример запуска программы:
Рис. 1 – Окно программы при запуске