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## compareprog
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### Instructions
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Write a program that behaves like the `Compare` function.
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This program prints a number after comparing two `string` lexicographically.
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### Usage :
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```console
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student@ubuntu:~/compareprog$ go build
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student@ubuntu:~/compareprog$ ./compareprog a b | cat -e
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-1$
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student@ubuntu:~/compareprog$ ./compareprog a a | cat -e
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0$
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student@ubuntu:~/compareprog$ ./compareprog b a | cat -e
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1$
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student@ubuntu:~/compareprog$ ./compareprog b a d | cat -e
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$
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student@ubuntu:~/compareprog$ ./compareprog | cat -e
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$
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student@ubuntu:~/compareprog$
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```
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