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