31 lines
465 B
Markdown
31 lines
465 B
Markdown
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## Sum
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### Objectives
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1. Write a script that gets two numbers and prints their sum
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3. Make sure the input is valid (= you got two numbers from the user)
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2. Test the script by running and passing it two numbers as arguments
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### Constraints
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1. Use functions
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### Solution
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```
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#!/usr/bin/env bash
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re='^[0-9]+$'
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if ! [[ $1 =~ $re && $2 =~ $re ]]; then
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echo "Oh no...I need two numbers"
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exit 2
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fi
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function sum {
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echo $(( $1 + $2 ))
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}
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sum $1 $2
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```
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