Numeric functions (min, max, ceil) in Terraform - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to find the minimum of two numbers.

Terraform

output "min_value" {
  value = min(10, [1])
}

Drag options to blanks, or click blank then click option'

A30

B5

C15

D20

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing a number larger than 10.

Confusing min with max function.

The min function returns the smallest number. Here, 5 is smaller than 10.

2fill in blank

medium

Complete the code to find the maximum of three numbers.

Terraform

output "max_value" {
  value = max(7, 14, [1])
}

Drag options to blanks, or click blank then click option'

A20

B5

C10

D12

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing a number smaller than 14.

Using min instead of max function.

The max function returns the largest number. Among 7, 14, and 20, 20 is the largest.

3fill in blank

hard

Fix the error in the code to correctly round up the number.

Terraform

output "rounded_up" {
  value = ceil([1])
}

Drag options to blanks, or click blank then click option'

A3

B"3.2"

C3.2

Dceil

Attempts:

3 left

💡 Hint

Common Mistakes

Passing a string instead of a number.

Passing the function name instead of a number.

The ceil function rounds a number up. It requires a numeric input, not a string or function name.

4fill in blank

hard

Fill both blanks to create a value that is the maximum of 5 and the ceiling of 4.3.

Terraform

output "max_ceil" {
  value = max([1], ceil([2]))
}

Drag options to blanks, or click blank then click option'

A5

B4.3

C3.7

D6

Attempts:

3 left

💡 Hint

Common Mistakes

Using a number other than 5 in the first blank.

Using a number other than 4.3 in the second blank.

The code finds the maximum between 5 and the ceiling of 4.3 (which is 5). So both blanks must be 5 and 4.3 respectively.

5fill in blank

hard

Fill all three blanks to output the minimum of the ceiling of 7.1, the maximum of 3 and 9, and 8.

Terraform

output "complex_calc" {
  value = min(ceil([1]), max([2], [3]), 8)
}

Drag options to blanks, or click blank then click option'

A7.1

B3

C9

D6

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the numbers in max function.

Using wrong numbers for ceiling or max.

The ceiling of 7.1 is 8. The maximum of 3 and 9 is 9. The minimum among 8, 9, and 8 is 8.

Practice

1. What does the Terraform function min(3, 7, 2) return?

easy

A. Error

B. 3

C. 7

D. 2

Solution

1. Step 1: Understand the min function

   The min function returns the smallest number from the given list.

2. Step 2: Compare the numbers 3, 7, and 2

   Among 3, 7, and 2, the smallest number is 2.

3. Final Answer:

   2 -> Option D

4. Quick Check:

   min(3,7,2) = 2 [OK]

Hint: min returns the smallest number from the list [OK]

Common Mistakes:

• Confusing min with max
• Expecting average instead of minimum
• Using ceil instead of min

2. Which of the following is the correct syntax to use the ceil function in Terraform?

easy

A. ceil(4.3)

B. ceil 4.3

C. ceil[4.3]

D. ceil{4.3}

Solution

1. Step 1: Recall Terraform function syntax

   Terraform functions use parentheses to enclose arguments, like function_name(argument).

2. Step 2: Check each option

   Only ceil(4.3) uses correct function call syntax.

3. Final Answer:

   ceil(4.3) -> Option A

4. Quick Check:

   Function calls use parentheses [OK]

Hint: Terraform functions always use parentheses for arguments [OK]

Common Mistakes:

• Using spaces instead of parentheses
• Using brackets or braces instead of parentheses
• Missing parentheses

3. What is the output of this Terraform expression?
max(5, ceil(3.2), min(4, 2))

medium

A. 2

B. 5

C. 3

D. 4

Solution

1. Step 1: Evaluate inner functions

   ceil(3.2) rounds 3.2 up to 4.
   min(4, 2) returns 2.

2. Step 2: Evaluate max function

   Now the expression is max(5, 4, 2). The largest number is 5.

3. Final Answer:

   5 -> Option B

4. Quick Check:

   max(5,4,2) = 5 [OK]

Hint: Evaluate inner functions first, then apply max [OK]

Common Mistakes:

• Ignoring nested function calls
• Mixing up min and max
• Forgetting ceil rounds up

4. Identify the error in this Terraform expression:
ceil(5.7, 2)

medium

A. Invalid function name

B. Missing parentheses

C. Too many arguments for ceil function

D. ceil cannot be used with decimals

Solution

1. Step 1: Check the ceil function signature

   The ceil function takes exactly one argument, a decimal number.

2. Step 2: Analyze the given expression

   The expression ceil(5.7, 2) has two arguments, which is invalid.

3. Final Answer:

   Too many arguments for ceil function -> Option C

4. Quick Check:

   ceil expects one argument [OK]

Hint: ceil takes only one decimal argument [OK]

Common Mistakes:

• Passing multiple arguments
• Confusing ceil with round
• Using wrong argument types

5. You want to find the smallest whole number greater than or equal to the minimum of 3.4, 2.1, and 5.9 in Terraform. Which expression achieves this?

hard

A. ceil(min(3.4, 2.1, 5.9))

B. min(ceil(3.4, 2.1, 5.9))

C. max(min(3.4, 2.1, 5.9))

D. ceil(max(3.4, 2.1, 5.9))

Solution

1. Step 1: Find the minimum of the numbers

   min(3.4, 2.1, 5.9) returns 2.1, the smallest number.

2. Step 2: Apply ceil to round up to the nearest whole number

   ceil(2.1) rounds 2.1 up to 3.

3. Final Answer:

   ceil(min(3.4, 2.1, 5.9)) -> Option A

4. Quick Check:

   min=2.1, ceil(2.1)=3 [OK]

Hint: Apply min first, then ceil to round up [OK]

Common Mistakes:

• Applying ceil before min
• Using max instead of min
• Confusing order of functions