多线程实现变色龙

 1 #define _CRT_SECURE_NO_WARNINGS
 2 #include <stdio.h>
 3 #include <stdlib.h>
 4 #include <Windows.h>
 5 #include <process.h>
 6 #include <time.h>
 7 
 8 void timeset(void *p)//线程的main函数
 9 {
10     int i = 0;
11     while (1)
12     {
13         i++;
14         char str[100] = { 0 };
15         sprintf(str, "title 当前时间第%d秒", i);
16         system(str);
17         Sleep(1000);
18     }
19 
20     
21 }
22 
23 void colorall(void *p)
24 {
25     time_t ts;
26     unsigned int num = time(&ts);
27     srand(num);
28 
29     for (;;)
30     {
31         int num1 = rand() % 16;
32         Sleep(10);
33         int num2 = rand() % 16;
34         char str[50] = { 0 };
35         sprintf(str, "color %x%x", num1, num2);//%x 转化成十六进制
36         system(str);
37     }
38 }
39 
40 void main()
41 {
42     _beginthread(timeset, 0, NULL);
43     _beginthread(colorall, 0, NULL); 
44 
45     system("color 3f");
46     system("pause");
47 }