15.C语言多线程实现变色龙以及cmd窗口标题变化

 #define _CRT_SECURE_NO_WARNINGS

 #include <stdlib.h>
 #include <stdio.h>
 #include <Windows.h>
 #include <process.h>
 #include <time.h>

 void title(void *p)
 {
     char title[];
     int i = ;

     while ()
     {
         sprintf(title, "title 程序已经运行了%d秒", i);
         system(title);
         i++;
         Sleep();
     }

 }

 void color_change(void *p)
 {
     char color[];
     srand(time());
     while ()
     {
         int num1 = rand() % ;
         int num2 = rand() % ;
         sprintf(color, "color %x%x", num1, num2);
         system(color);
         Sleep();
     }
 }

 void main()
 {
     _beginthread(title, , NULL);
     _beginthread(color_change, , NULL);

     system("pause");
 }