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

int main()
{
	char arr1[] = "hallo world";
	char arr2[] = "***********";
	int left = 0;
	int right = sizeof(arr1) / sizeof(arr1[0])-2;
	while (left <= right)
	{
		arr2[left] = arr1[left];
		arr2[right] = arr1[right];
		system("cls");
		printf("%s\n", arr2);
		Sleep(100);
		left++;
		right--;
	}
	system("pause");
	return 0;
}