What is a Boolean expression?

A Boolean expression is a specific type of expression that evaluates to either True or False. This evaluation is fundamental in programming and computer science as it serves to control the flow of logic within applications. Boolean expressions are often used in conditional statements (such as if, while, or for) where a decision needs to be made based on whether the expression is true or false.

For example, in an if statement, the condition within the parentheses is typically a Boolean expression. If the expression evaluates to True, the block of code within the if statement executes; if it evaluates to False, the execution skips that block.

Understanding Boolean expressions is crucial for developing algorithms and controlling program behavior, making them a cornerstone of logical operations in programming languages.