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Program Structure

Main Function Requirement​

Every project must define a main function, which serves as the entry point of execution.

Reasoning:​

  • Ensures a clear starting point for program execution.
  • Improves code organization and readability.
  • Makes it easier for tools and compilers to locate the main logic.
fn main() {
    console.log("Hello, world!");
}

No Function Calls in Global Scope​

Functions cannot be called directly in the global scope; all execution must happen within functions.

Reasoning:​

  • Prevents unintended side effects during program initialization.
  • Encourages structured, modular code.
  • Avoids execution order issues, ensuring a predictable runtime.
console.log("This is not allowed");  // ❌ Function call in global scope
fn main() {
    console.log("This is allowed");  // ✅ Function call inside a function
}