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561 B
561 B
returna
Instructions
Write a program that takes a string as an argument, if the string contains the letter a then print Contains the letter followed by a newline \n.
- If there is no character
ain thestring, the program writes!(Contains the letter)followed by a newline\n. - If the number of parameters is not 1, the program displays a newline
\n.
Usage
$ go run . "do I exist" | cat -e
!(Contains the letter)$
$
$ go run . "I do exist a" | cat -e
Contains the letter$
$
$ go run . "one" "two" | cat -e
$