include <stdio.h>
include <stdlib.h>
include <windows.h>
int main()
{
int i, j;
int x=2;
int y = 5;
int velocity_x =1;
int velocity_y =1;
int left =0;
int right =80;
int top = 0;
int bottom = 10;
while(1)
{
x = x + velocity_x;
y = y + velocity_y;
system("cls");
for (i=1; i <x; i++)
{
printf("
");
}
for (j=1; j<y; j++)
{
printf(" ");
}
printf("o
");
if ((x==top)|| (x==bottom))
velocity_x = -velocity_x;
if ((y==left)||(y==right))
velocity_y = -velocity_y;
}
return 0;
}