十进制到十六进制的转换。要求：

1．从键盘取得十进制数，然后以十六进制在屏幕上显示；

2．能连续多次转换输入的十进制数，以回车键作为输入十进制数的结束；

3．若键盘输入的不是数字，则在屏幕上提示：“the input is not a a number,again,please!”

4. 键入‘q’键则可退出程序 -Decimal to hexadecimal conversion. Requirements:　1. To obtain a decimal number from the keyboard and then the hexadecimal display on the screen　 2. Able to continuously convert input decimal number to Enter the end of a decimal number as input　 3. If the keyboard input is not a number, then the on screen prompts: " the input is not aa number, again, please!"　 4. Typing ' q'　key you can exit the program