从键盘输入任意字符串后，存入自定义存储单元，判断处理后将字符串中小写字母转换为大写字母(其他字符不变)并按原顺序将这些字符在屏幕上显示出来。-From keyboard input an arbitrary string, stored in a custom storage unit, judgment will be processed string lowercase letters converted to uppercase letters (the same character) in the original order, these characters appear on the screen.