【C语言】输出字符串

#include<stdio.h>
#include<string.h>
#include<windows.h>

int main()
{
char arr1[] = "###############";
char arr2[] = "welcome to bit!";
int left = 0, right = 0, i = 0,size=0;
size = strlen(arr1) ;
right = size - 1;    // 减一为数组下标
printf("%s\n", arr1);
for (i = 0; i < (size + 1) / 2; i++)   //左右同时替换，共需8次完成
{

arr1[left] = arr2[left];
arr1[right] = arr2[right];
left++;
right--;
printf("%s\n", arr1);
Sleep(1000);
}
system("pause");
return 0;
}