how to call funtion in bash code example

Example 1: bash function

function hello {
	echo Hello
}
hello
function e {
	echo $1  # $1 is the first argument
}
e Hello

Example 2: how to make a function in bash

print_something () {
echo Hello I am a function
}

Example 3: how to make a function in bash

function_name () {
<commands>
}