文件加密解密,将文件file1中的每一字符与0x6a异或变成另一个字符送屏幕显示，同时存入文件file2中。打开加密的file2输出解密内容。-File encryption and decryption, every character in the file1 xor with 0x6a changing into another character,then　display on the screen, at the same time depositing in the file2. Open the encryption file file2 , decrypt file2 and output.