C4

A minimal programming language that transpiles to C. Hobby project for learning compiler design and is not intended to replace C.

Current Features

Working:

• Integer variables with := assignment
• Arithmetic operators: +, -, *, / with proper precedence
• Comparison operators: <, >, ==, !=, <=, >=
• Parentheses for grouping
• print() statement
• Full lexer → parser → code generator pipeline

Example:

x := 5 + 10;
y := x * 2;
result := y > 15;
print(result);

Generates valid C code, compiles, and runs.

What's Missing \

• Control flow (if/else, while loops)
• Functions
• Types beyond integers
• Strings

Build and run

make
./transpiler tests/comparisons.c4
./program