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660 B

gcd

Instructions

Write a program that takes two strings representing two strictly positive integers that fit in an int.

Display their greatest common divisor followed by a newline (It is always a strictly positive integer).

If the number of parameters is not 2, display a newline.

Example of output :

student@ubuntu:~/student/gcd$ go build
student@ubuntu:~/student/gcd$ ./gcd 42 10 | cat -e
2$
student@ubuntu:~/student/gcd$ ./gcd 42 12 | cat -e
6$
student@ubuntu:~/student/gcd$ ./gcd 14 77 | cat -e
7$
student@ubuntu:~/student/gcd$ ./gcd 17 3 | cat -e
1$
student@ubuntu:~/student/gcd$ ./gcd | cat -e
$
student@ubuntu:~/student/gcd$