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## printchessboard
### Instructions
Write a program that takes two integers as arguments and displays the chess desk, in which white cells are represented by `' '` and black cells by `'#'`.
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- If the number of arguments is different from 2, or if the argument is not a positive number, the program displays `Error` followed by a newline (`'\n'`).
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### Usage
```console
student@ubuntu:~/[[ROOT]]/printchessboard$ go build
student@ubuntu:~/[[ROOT]]/printchessboard$ ./printchessboard 4 3 | cat -e
# # $
# #$
# # $
student@ubuntu:~/[[ROOT]]/printchessboard$ ./printchessboard 7 | cat -e
Error$
student@ubuntu:~/[[ROOT]]/printchessboard$ ./printchessboard 0 0 | cat -e
Error$
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student@ubuntu:~/[[ROOT]]/printchessboard$
```