Problem Set: Logic

This section contains a number of selected problems for the Logic section.

It is recommended that you review the problems, and complete a few before moving on to the next section.

Problem #1: This or That

Identify the output of the following snippet when ||variables:bool|| is

• ||logic:true||
• ||logic:false||

if (bool) {
    console.log("This");
} else {
    console.log("That");
}

Problem #2: Boolean logic

Determine whether the following expressions evaluate to ||logic:true|| or ||logic:false||.

Problem #3: Mysterious Logging

Fill in the table below for the output of the following code based on the initial values of ||variables:bool1|| and ||variables:bool2||. If multiple values are logged, use a slash / to separate the different lines. The case where ||variables:bool1|| and ||variables:bool2|| are both ||logic:true|| is filled in as an example.

if (bool1 && 10 > 4) {
    if (!bool2) {
        console.log("1");
    } else {
        console.log("2");
    }
    console.log("3");
} else {
    if (6 > 8) {
        console.log("4");
    } else {
        console.log("5");
    }
}

Problem #4: Rain or Shine

Translate the following statements into a program that ||game:splashes|| a clothing choice. Use a number variable ||variables:temp|| for the temperature and a boolean variable ||variables:isRaining|| for whether or not it is raining.

If the temperature is less than 30 degrees, then I wear my winter coat. Otherwise, if it is raining, I wear my rain jacket. In all other cases, I’ll just wear a sweatshirt.

Problem #5: Implication

Create a boolean expression that generates the following results given boolean variables ||variables:a|| and ||variables:b||.