街边底商LED广告语的显示方法

使用数组，使用每个元素的下标定位元素，逐个替换实现

int main() {

	char arr1[] = "XXX!Welcome To China!XXX";
	char arr2[] = "                        ";

	int left = 0;
	int right = strlen(arr1) - 1;

	while (left<=right) {
		
		arr2[left] = arr1[left];
		arr2[right] = arr1[right];
		
		Sleep(500);
		system("cls");
		
		left++;
		right--;

		printf("%s\n", arr2);
	}

	return 0;
}

输出结果：