OR: Your Logical Expander
Want to give your Commodore 64 programs more flexibility in their decision-making? Look no further than the OR command, your logical expander! This handy tool lets you combine multiple conditions into a single IF...THEN statement, broadening the possibilities for when your code takes action. It's like adding extra paths to your decision-making tree!
Syntax
IF <condition1> OR <condition2> THEN <statement>
Where:
- <condition1>, <condition2>: Boolean expressions that evaluate to either true (-1 in C64 BASIC) or false (0).
- <statement>: The code to execute if at least one of the conditions is true.
Applications
The OR command is a powerful tool for:
- Creating flexible conditions: Allow multiple scenarios to trigger the same action in your code.
- Validating input: Check if user input matches any of several valid options.
- Building complex logic: Combine
ORwith other logical operators (AND,NOT) to create intricate decision trees. - Simplifying code: Replace multiple
IF...THENstatements with a single, more conciseORstatement.
Code Examples
1. Simple OR Condition:
10 INPUT "Enter a number (1-10): "; N
20 IF N < 1 OR N > 10 THEN PRINT "Invalid input!"
This example checks if the inputted number is outside the valid range of 1 to 10.
2. Multiple Options:
10 INPUT "Do you like cats, dogs, or both? (C/D/B): "; P$
20 IF P$="C" OR P$="B" THEN PRINT "You like cats!"
30 IF P$="D" OR P$="B" THEN PRINT "You like dogs!"
This snippet determines if the user likes cats, dogs, or both, based on their input.
3. Combined with AND and NOT:
10 INPUT "Enter age: "; A
20 IF (A >= 18 AND A < 65) OR (A > 65 AND NOT (A > 80)) THEN PRINT "Eligible"
This complex example checks if the age is within a certain range (18-65) or if it's over 65 but not over 80.
OR in the Wild: The Party Planner
Imagine you're creating a program to organize a party guest list. You could use OR to check if a potential guest is a friend, family member, or coworker, ensuring that all your favorite people are invited!
Don't let your code be trapped in a binary world of "true" and "false"! With OR, you can expand your logical horizons and create programs that can handle a wider range of scenarios. It's like adding extra lanes to your code's highway, allowing it to reach multiple destinations with a single turn. So embrace the flexibility of OR and unlock a new level of decision-making power!
