编写一个程序，新建一个文件：d:\abc.txt,从键盘输入文件的内容（不超过100个字符）。然后新建一个文件：d:\def.txt,将d:\abc.txt文件的内容复制到d:\def.txt。-Write a program to create a new file of organization: d: \ abc.txt, contents of the file from the keyboard input (not more than 100 characters). Then create a new file: d: \ def.txt, d: \ abc.txt file copied to d: \ def.txt.