#!/usr/bin/env bellos
# File: control_structures.bellos

# Demonstrating if-else statements
echo "Demonstrating if-else statements:"
x=10
If [ $x -gt 5 ] Then
    echo "x is greater than 5"
Else
    echo "x is not greater than 5"
Fi

# Demonstrating nested if-else
echo "Demonstrating nested if-else:"
y=20
If [ $x -gt 5 ] Then
    If [ $y -gt 15 ] Then
        echo "x is greater than 5 and y is greater than 15"
    Else
        echo "x is greater than 5 but y is not greater than 15"
    Fi
Else
    echo "x is not greater than 5"
Fi

# Demonstrating while loop
echo "Demonstrating while loop:"
counter=0
While [ $counter -lt 5 ] Do
    echo "Counter: $counter"
    counter=$((counter + 1))
Done

# Demonstrating for loop
echo "Demonstrating for loop:"
For i In 1 2 3 4 5 Do
    echo "Iteration: $i"
Done

# Demonstrating for loop with command substitution
echo "Demonstrating for loop with command substitution:"
For i In $(seq 1 5) Do
    echo "Number: $i"
Done

# Demonstrating case statement
echo "Demonstrating case statement:"
fruit="apple"
Case $fruit In
    "apple")
        echo "It's an apple"
        ;;
    "banana")
        echo "It's a banana"
        ;;
    "orange")
        echo "It's an orange"
        ;;
    *)
        echo "Unknown fruit"
        ;;
Esac

# Demonstrating function
echo "Demonstrating function:"
Function greet (
    echo "Hello, $1!"
)
greet "World"
greet "Bellos"

echo "Control structures demonstration completed."