Lang 27 Documentation
Overview
Lang 27 is a simple programming language designed for ease of use and readability. It supports basic syntax, data types, operators, control flow structures, functions, and built-in input/output functions.
GitHub Repository:
Features and Examples
1. Basic Syntax
Lang 27 allows variable declarations and function definitions using clear and structured syntax.
Example:
Variable Declarations
Variables in Lang 27 are declared using the following format:
## Variable declarations
num x = 10
str message = "Hello, Lang 27!"
dec pi = 3.14
chr letter = 'A'
bool isActive = true
Function Definitions
Functions are defined using the func keyword, followed by a name and parameters:
2. Data Types
Lang 27 supports five primitive data types:
- num - Integer values (e.g., 10)
- str - String values (e.g., "Hello")
- dec - Decimal values (e.g., 3.14)
- chr - Character values (e.g., 'A')
- bool - Boolean values (true or false)
Example:
num count = 10
str message = "Hello, World!"
dec price = 19.99
chr grade = 'A'
bool isActive = true
3. Operators
Lang 27 supports the following operators:
Arithmetic Operators: +, -, *, /
Comparison Operators: ==, !=, >, <, >=, <=
Assignment Operator: =
Example:
num a = 5
num b = 3
drucken(a + b) ## Output: 8
drucken(a > b) ## Output: true
4. Control Flow
If-Else Statements
num score = 85
if (score >= 50) {
drucken("Pass")
} el {
drucken("Fail")
}
For Loop
for (num i = 1; i <= 5; i = i + 1) {
drucken(i)
}
5. Built-in Functions
Lang 27 provides useful built-in functions.
drucken(value): Prints the value to the console.eingabe(prompt, type): Takes user input with type conversion.len(value): Returns the length of a string.to_num(value): Converts a string to a number.
Example:
drucken("Enter your name:")
str userName = eingabe("", str)
drucken("Hello, " + userName)
6. Function Declaration
Functions are defined using the func keyword.
Example:
func add(num a, num b) {
return a + b
}
drucken(add(10, 20)) ## Output: 30
7. User Input Handling
Lang 27 allows user input with type conversion.
Example:
num userAge = eingabe("Enter your age: ", num)
drucken("Your age is: " + userAge)
8. String Manipulation
Example:
str firstName = "John"
str lastName = "Doe"
drucken("Full name: " + firstName + " " + lastName)
drucken("Length of name: " + len(firstName))
9. Mathematical Operations
Example:
num x = 10
num y = 3
drucken("Sum: " + (x + y))
drucken("Product: " + (x * y))
10. Type Conversion
Example:
str numStr = "42"
num convertedNum = to_num(numStr)
drucken("Converted number: " + convertedNum)
11. Nested If Statements
Example:
num value = 10
if (value > 0) {
if (value % 2 == 0) {
drucken("Positive Even Number")
} el {
drucken("Positive Odd Number")
}
} el {
drucken("Non-positive Number")
}
12. Function with Loops
Example:
func factorial(num n) {
num result = 1
for (num i = 1; i <= n; i = i + 1) {
result = result * i
}
return result
}
drucken("Factorial of 5: " + factorial(5))
Contributing
Contributions are welcome! Feel free to submit issues and pull requests via the GitHub Repository.
License
This project is open-source and available under the MIT License.