If statement
Definition
An if statement allows the execution of a block of code only if a specified condition is true. It is fundamental for decision-making in programming.
5 Must Know Facts For Your Next Test
- An if statement evaluates a boolean expression and executes the associated block only if the expression is true.
- The syntax includes the keyword 'if' followed by a condition in parentheses and a colon, then an indented block of code.
- Multiple conditions can be evaluated using elif (else if) statements following the initial if statement.
- An else clause can be added to execute a block of code when all preceding conditions are false.
- Logical operators (and, or, not) can combine multiple conditions within an if statement.
Review Questions
- What happens when the condition in an if statement evaluates to false?
- How do you include multiple conditions within an if statement?
- What is the purpose of an else clause?
"If statement" appears in:
Study guides (1)
Related terms
Boolean Expression: A logical statement that can only be true or false.
elif Statement: 'elif' stands for else if and allows checking multiple expressions for True and executing a block of code as soon as one condition evaluates to True.
Logical Operators: 'and', 'or', and 'not' are used to form complex boolean expressions in conditional statements.
