C语言第十八弹---多个字符从两端移动向中间汇聚

#include <stdio.h>
#include <string.h>
#include <windows.h>
int main()
{
  char arr1[] = "hello world";
  char arr2[] = "***********";
  int sz = strlen(arr1);
  int left = 0;
  int right = sz - 1;
  while (left <= right)
  {
    Sleep(200);//可以理解为控制打印速度 单位 ms 引头文件windows.h
    arr2[left] = arr1[left];
    arr2[right] = arr1[right];
    printf("%s\n",arr2);
    left++;
    right--;
  }
  return 0;
}