3.5 Booleans; All About Booleans (Period 3)

All About Booleans

What Are Booleans?

In programming, a Boolean is a data type that can hold one of two values: true or false. These values are used to represent truth values, which are fundamental in controlling the flow of a program.

Basic Boolean Values

True: Indicates a logically true condition. False: Indicates a logically false condition.

Boolean Expressions

A Boolean expression is a statement that evaluates either true or false. Common Boolean expressions often involve comparison or relational operators, such as:

Equal to (==)

Not equal to (!=)

Greater than (>)

Less than (<)

Greater than or equal to (>=)

Less than or equal to (<=)

%%javascript

// Example 1: Checking if a boolean is true

const variableA = true;
const variableB = false;

if (variableA) {
    console.log("VariableA is true!");
} else {
    console.log("VariableA is false!");
}

if (variableA && !variableB) {
    console.log("VariableA is true and VariableB is false");
}

if (variableA || variableB) {
    console.log("Either VariableA or VariableB is true");
}

<IPython.core.display.Javascript object>

%%javascript

// booleans in javascript
const number = 1;

if (number > 10) {
    console.log("Number is greater than ten!");
} else {
    console.log("Number is not greater than ten!");
}

<IPython.core.display.Javascript object>

%%javascript

//Example of using Booleans with numbers in Python

const temperature = 105  
is_hot = temperature > 100 //Boolean expression (WILL BE TRUE)

const number = 50

if (number > 100) {
    console.log("It's a a big number day!")
} else {
    console.log("It's a small number")
}

<IPython.core.display.Javascript object>