Compound Booleans with logical operators

A game programmer uses this nested conditional in their online Four Square game.

IF (mouseX < 200 AND mouseY < 200) { 
    currentSquare ← 1
} ELSE {
    IF (mouseX > 200 AND mouseY < 200) {
        currentSquare ← 4
    } ELSE {
        IF (mouseX < 200 AND mouseY > 200) {
           currentSquare ← 2
        } ELSE {
            IF (mouseX > 200 AND mouseY > 200) {
                currentSquare ← 3
            }
       }
    }
}

When mouseX is 173 and mouseY is 271, what will be the value of currentSquare?

🤔

This code is written in pseudocode. You can't actually run pseudocode, but we use it for planning programs and for thinking about code independently of specific programming language.

AP CSP exam questions use pseudocode, so it's helpful to become familiar with it.

Here is a reference for the pseudocode used here:

IF (<condition>)
{
     <instructions 1>
} 
ELSE 
{
     <instructions 2>
}

If the <condition> is true, the first set of instructions is executed. Otherwise, the second set of instructions is executed. Each instructions block may contain additional nested IF/ELSE conditions.

a ← expression

Evaluates expression and assigns the result to the variable a.

**Relational operators**
Operator	Meaning
`a = b`	Equality
`a ≠ b`	Inequality
`a > b`	Greater than
`a < b`	Less than
`a ≥ b`	Greater than or equal
`a ≤ b`	Less than or equal

AP®︎/College Computer Science Principles

Course: AP®︎/College Computer Science Principles > Unit 3

Problem