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802 B
802 B
ispowerof2
Instructions
Write a program that determines if a given number is a power of 2.
This program must print true if the given number is a power of 2, otherwise it prints false.
-
If there is more than one or no argument the program should print a newline ("
\n"). -
Error cases have to be handled.
Usage :
student@ubuntu:~/ispowerof2$ go build
student@ubuntu:~/ispowerof2$ ./ispowerof2 2 | cat -e
true$
student@ubuntu:~/ispowerof2$ ./ispowerof2 64 | cat -e
true$
student@ubuntu:~/ispowerof2$ ./ispowerof2 513 | cat -e
false$
student@ubuntu:~/ispowerof2$ ./ispowerof2
student@ubuntu:~/ispowerof2$ ./ispowerof2 64 1024
student@ubuntu:~/ispowerof2$ ./ispowerof2 notanumber | cat -e
strconv.Atoi: parsing "a": invalid syntax$
student@ubuntu:~/ispowerof2$