让用户从键盘输入若干个字符，将所有字符放入顺序表中，然后将顺序表第一个字符取出放在表中间，最后将顺序表在屏幕上显示。注意：顺序表的容量有限，因此程序中需要有异常处理机制，如果顺序表容量不能存放用户输入则提示用户输入内容过多。测试异常处理是否能正确运行。-Let the user enter the number of characters from the keyboard, all the characters into the sequence table, then the first character of the sequence tables out on the table to the middle of the order of the table displayed on the screen. Note: the limited capacity of the sequence table, the program needs to have exception handling mechanism, the capacity of the sequence table to store user input prompts the user too much content. The test exception handling whether to run correctly.