交换上下串字符串对应位置

#include<stdio.h>

#include<string.h>

#include<windows.h>

int main()

{

char arr1[]="welcome to bit";

char arr2[]="##############";

int left=0;

int right=strlen(arr1)-1;

while(left<=right)

   {arr2[left]=arr1[left];

    arr2[right]=arr1[right];

 left++;

 right--;

 printf("%s\n",arr2);

 Sleep(1000);

   }

return 0;