Ohio Programming Language

Syntax and Rules

1. Data Types

Ohio supports the following data types:

• alpha - Integer values (e.g., int age = 25;)
• beta - Decimal (floating-point) values (e.g., dec pi = 3.14159;)
• rizz - Boolean values (true or false)
• gamma - Single character values (e.g., char letter = 'A';)

2. Variable Declaration

• Variables must be declared before use.
• Only lowercase letters are allowed for variable names.
• Example:

  alpha x = 10;
  beta pi = 3.14;
  rizz is_valid = true;
  

3. Constants

• Global constants must be declared outside code {}.
  • Example:

    << a global variable >>
    beta pi = 3.14159;
    
    code {
      << a local varible >>
      beta radius = 10.0;
    }
    

4. Operators

• Arithmetic: +, -, *, /, %
• Comparison: ==, !=, >, <, >=, <=
• Assignment: =
• Exponent: e

5. Control Structures

If-Else Statement

flip () {
    << true case code >>
} twist() {
    << else if case code >>
} flop() {
    << false case code >>
}

Example:

flip (x > 0) {
    echo("x is positive");
} twist (x < 0) {
    echo("x is negative");
} flop {
    echo("x is 0");
}

Loops

• While Loop:

spin (condition) {
    << Code block >>
}

Example:

alpha i = 0;
spin (i < 5) {
    echo(i);
    i = i + 1;
}

6. Input/Output

• Printing to Console:

echo("Hello, World!");

• User Input:

alpha age = capture("Enter your age: ");

7. Comments

• Single-line comment: << This is a comment >>
• Multi-line comment:

<<<
   This is a multi-line comment.
>>>

8. Functions

• Functions must be declared before use.
• Example:

func add(int a, int b) {
    return a + b;
}
alpha result = add(5, 3);
echo("Sum:", result);

9. Code Blocks & Indentation

• Main block of code is enclosed in code{}.
• Proper indentation is recommended but not required.

Example Program

<< Calculate area of a circle >>

beta pi = 3.14159;

code {
    alpha radius = capture("Radius: ");
    beta area = pi * radius * radius;
    
    flip (area > 50) {
        echo("Large circle");
    } flop {
        echo("Small circle");
    }
}

File Extension

• Ohio files should use the .ohio extension.

End of File (EOF)

• The program ends automatically at the last line unless explicitly stated.