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28 lines
819 B
28 lines
819 B
4 years ago
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## romannumbers
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### Instructions
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Write a program called `rn`. The objective is to converte a number, given has argument, into a roman number and print it with roman number calculation.
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The program should have a limit of `4000`. In case of an invalid number, for example `"hello"` or `0` the program should print `ERROR: can not convert to roman digit`.
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## Usage
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```console
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student@ubuntu:~/[[ROOT]]/test$ go build
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student@ubuntu:~/[[ROOT]]/test$ ./rn hello
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ERROR: can not convert to roman digit
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student@ubuntu:~/[[ROOT]]/test$ ./rn 123
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C+X+X+I+I+I
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CXXIII
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student@ubuntu:~/[[ROOT]]/test$ ./rn 999
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(M-C)+(C-X)+(X-I)
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CMXCIX
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student@ubuntu:~/[[ROOT]]/test$ ./rn 3999
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M+M+M+(M-C)+(C-X)+(X-I)
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MMMCMXCIX
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student@ubuntu:~/[[ROOT]]/test$ ./rn 4000
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ERROR: can not convert to roman digit
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student@ubuntu:~/[[ROOT]]/test$
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```
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