Module 2~8 min
Conditional Statements
Programs often need to make decisions. Conditional statements let code choose different actions based on whether something is true or false.
What You'll Learn
- What a conditional statement is
- How if/else works
- Simple examples of conditions
Making Decisions in Code
A conditional statement runs different code depending on whether a condition is true or false, letting a program react differently to different situations.
If and Else
The most common conditional is `if`, which runs a block of code only when its condition is true. An `else` block can run instead when the condition is false.
Example
A program checking login attempts might say: if the password is correct, grant access; else, show an error message.
Key Concepts
ConditionalIf/ElseCondition
Key Takeaways
- Conditional statements let a program choose between different actions
- `if` runs code only when a condition is true
- `else` provides an alternative when the condition is false
Knowledge Check
What does an `if` statement do?