public/subjects/repeatalpha.en.md

repeatalpha

Instructions

Write a program called repeat_alpha that takes a string and displays it repeating each alphabetical character as many times as its alphabetical index.

The result must be followed by a newline ('\n').

'a' becomes 'a', 'b' becomes 'bb', 'e' becomes 'eeeee', etc...

The case remains unchanged.

If the number of arguments is different from 1, the program displays a newline ('\n').

Usage

student@ubuntu:~/piscine-go/repeatalpha$ go build
student@ubuntu:~/piscine-go/repeatalpha$ ./repeatalpha "abc" | cat -e
abbccc
student@ubuntu:~/piscine-go/repeatalpha$ ./repeatalpha "Alex." | cat -e
Alllllllllllleeeeexxxxxxxxxxxxxxxxxxxxxxxx.$
student@ubuntu:~/piscine-go/repeatalpha$ ./repeatalpha "abacadaba 42!" | cat -e
abbacccaddddabba 42!$
student@ubuntu:~/piscine-go/repeatalpha$ ./repeatalpha | cat -e
$
student@ubuntu:~/piscine-go/repeatalpha$ ./repeatalpha "" | cat -e
$
student@ubuntu:~/piscine-go/repeatalpha$