Logical operators (-and, -or, -not) in PowerShell - Mini Project: Build & Apply

Using Logical Operators in PowerShell

📖 Scenario: You are managing a list of employees and their work statuses. You want to check who is eligible for a bonus based on their attendance and performance.

🎯 Goal: Build a PowerShell script that uses logical operators -and and -not to filter employees based on their attendance and performance.

📋 What You'll Learn

Create a dictionary called employees with employee names as keys and a nested dictionary as values containing attendance and performance scores.

Create a variable called attendance_threshold set to 80.

Use a foreach loop with variables name and info to iterate over employees.GetEnumerator().

Inside the loop, use logical operators -and and -not to check if an employee's attendance is above the threshold and performance is good.

Print the names of employees who qualify for the bonus.

💡 Why This Matters

🌍 Real World

Filtering employee data based on multiple conditions is common in HR and management tasks to decide bonuses or promotions.

💼 Career

Understanding logical operators and loops in PowerShell helps automate administrative tasks and data filtering in IT and business roles.

1

Create the employee data

Create a dictionary called employees with these exact entries: 'Alice' with attendance 90 and performance 85, 'Bob' with attendance 75 and performance 95, 'Charlie' with attendance 82 and performance 70.

PowerShell

# Create the employees dictionary with exact data
# Your code here

Need a hint?

Use @{} to create nested dictionaries for each employee.

2

Set the attendance threshold

Create a variable called attendance_threshold and set it to 80.

PowerShell

$employees = @{
    'Alice' = @{ attendance = 90; performance = 85 }
    'Bob' = @{ attendance = 75; performance = 95 }
    'Charlie' = @{ attendance = 82; performance = 70 }
}
# Set attendance_threshold to 80
# Your code here

Need a hint?

Just assign the number 80 to $attendance_threshold.

3

Use logical operators to find eligible employees

Use a foreach loop with variables name and info to iterate over $employees.GetEnumerator(). Inside the loop, use the logical operator -and to check if info.attendance is greater than or equal to $attendance_threshold and info.performance is greater than 80. Also, use -not to exclude employees with performance less than 75. Store the names of employees who meet these conditions in a list called eligible.

PowerShell

$employees = @{
    'Alice' = @{ attendance = 90; performance = 85 }
    'Bob' = @{ attendance = 75; performance = 95 }
    'Charlie' = @{ attendance = 82; performance = 70 }
}

$attendance_threshold = 80

# Create an empty list called eligible
# Use foreach loop to check conditions with -and and -not
# Your code here

Need a hint?

Use foreach ($entry in $employees.GetEnumerator()) and inside the loop check conditions with -and and -not. Add qualifying names to $eligible.

4

Print the eligible employees

Write a Write-Output statement to print the list $eligible.

PowerShell

$employees = @{
    'Alice' = @{ attendance = 90; performance = 85 }
    'Bob' = @{ attendance = 75; performance = 95 }
    'Charlie' = @{ attendance = 82; performance = 70 }
}

$attendance_threshold = 80

$eligible = @()
foreach ($entry in $employees.GetEnumerator()) {
    $name = $entry.Key
    $info = $entry.Value
    if (($info.attendance -ge $attendance_threshold) -and ($info.performance -gt 80) -and (-not ($info.performance -lt 75))) {
        $eligible += $name
    }
}

# Print the eligible employees
# Your code here

Need a hint?

Use Write-Output $eligible to show the names of employees who qualify.