多个字符从两边向中间汇聚。

#include <stdio.h>
#include <string.h>
#include <windows.h>
#include <stdlib.h>
int main ()
{
	char arr1[] = "welcome to hebei";
	char arr2[] = "****************";
	int left = 0;
	int right = strlen(arr1) - 1;
	printf("%s\n", arr2);
	while (left<=right)
	{
		
		arr2[left] = arr1[left];
		arr2[right] = arr1[right];
		left++;
		right--;
		Sleep(1000);//睡眠，使输出的内容变慢。
		system("cls");//删除上一次的输出
		printf("%s", arr2);
		
	}
		   return 0;
}