弹跳小球C语言

 1 #include <iostream>
 2 #include <cstdlib>
 3 #include <Windows.h>
 4 using namespace std;
 5 
 6 int main()
 7 {
 8     int i, j;
 9     int x = 0;
10     int y = 5;
11     int velocity_x = 1;
12     int velocity_y = 1;
13     int left = 0;
14     int right = 20;
15     int top = 0;
16     int bottom = 10;
17 
18     while(1){
19         
20         x = x + velocity_x;
21         y = y + velocity_y;
22         system("cls");
23 
24         for (i = 0; i < x; i++)
25             cout << endl;
26         for (j = 0; j < y; j++)
27             printf(" ");
28         printf("o\n");
29 
30         Sleep(50);
31         if (x == top || x == bottom) {
32             velocity_x *= -1;
33             printf("\a");
34         }
35 
36         if (y == left || y == right) {
37             velocity_y *= -1;
38             printf("\a");
39         }
40     }
41     return 0;
42 }