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if-else statement

Definition

An if-else statement is a programming construct that allows the program to make decisions based on certain conditions. It checks a condition and executes one block of code if the condition is true, and another block of code if the condition is false.

Analogy

Think of an if-else statement like choosing what to wear based on the weather forecast. If it's sunny, you wear shorts and a t-shirt (execute one block of code), but if it's raining, you grab an umbrella and wear a raincoat (execute another block of code).

Related terms

Two-way selection: A two-way selection refers to making a decision between two options based on a condition. It involves using an if-else statement to execute different blocks of code depending on whether the condition is true or false.

Condition: A condition in programming refers to an expression that evaluates to either true or false. It determines which block of code will be executed in an if-else statement.

Nested if statements: Nested if statements are multiple levels of conditional statements within each other. They allow for more complex decision-making by checking multiple conditions and executing different blocks of code accordingly.