First "Hello World" Program in TypeScript

• Certainly! Here's an example of a "Hello, World!" program written in TypeScript:

    // hello-world.ts

    // Declare a function that takes a string parameter and returns void

    function greet(name: string): void {

        console.log(`Hello, ${name}!`);

    }

    // Call the greet function with the name "World"

    greet("World");

• To run this TypeScript program, you'll need to compile it to JavaScript first. Here's how you can do that:

• Save the above code in a file called `hello-world.ts`.

• Open a Command Prompt or PowerShell window.

• Navigate to the directory where you saved `hello-world.ts`.

• Run the TypeScript compiler (`tsc`) command to compile the TypeScript file into JavaScript:

    tsc hello-world.ts

• This will generate a JavaScript file called `hello-world.js` in the same directory.

• Finally, you can run the JavaScript file using Node.js:

    node hello-world.js

• You should see the output:

Hello, World!

• Congratulations! You have successfully written and executed a "Hello, World!" program in TypeScript.