public/subjects/doop.en.md

doop

Instructions

Write a program that is called doop.

The program has to be used with three arguments:

• A value
• An operator
• Another value

In case of an invalid operator the programs prints 0.

In case of an invalid number of arguments the program prints nothing.

The program has to handle the modulo and division operations by 0 as shown on the output examples below.

fmt.Print is authorized.

Usage

student@ubuntu:~/piscine/test$ go build doop.go
student@ubuntu:~/piscine/test$ ./doop
student@ubuntu:~/piscine/test$ ./doop 1 + 1
2
student@ubuntu:~/piscine/test$ ./doop hello + 1 | cat -e
0$
student@ubuntu:~/piscine/test$ ./doop 1 p 1
0
student@ubuntu:~/piscine/test$ ./doop 1 + 1
2
student@ubuntu:~/piscine/test$ ./doop 1 / 0 | cat -e
No division by 0$
student@ubuntu:~/piscine/test$ ./doop 1 % 0 | cat -e
No modulo by 0$
student@ubuntu:~/piscine/test$ ./doop 1 "*" 1
1