PROGRAMMING:Judge character or number

Enter a character on the keyboard to determine whether it is a numeric character. If it is' a '~'z' or 'a' ~'z ', output "character"; if it is' 0' ~'9 ', output "digit"; if it is not, output "error".
###Input format:
Enter a character on the keyboard.
###Output format:
If it is a letter, it will output "character"; if it is a number, it will output "digit"; if it is not, it will output "error".
###Input example:
```in
A
```
###Output example:
The corresponding output is given here. For example:
```out
character
```







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