how to install rust in widows

 

Step 1: Install Rust

On Windows, the standard way to install Rust is using rustup, a tool that manages Rust versions and associated tools.

1. Download the Installer:

   • Go to the official Rust website: https://www.rust-lang.org/tools/install

   • Download rustup-init.exe (choose the 64-bit version if your computer is modern).

2. Run the Installer:

   • Double-click rustup-init.exe.

   • Crucial Note: The installer may ask you to install Visual Studio C++ Build Tools. If it does, follow the prompts to install them. Rust needs these Microsoft tools to link your programs correctly on Windows.

   • When prompted with installation options (1, 2, or 3), type 1 (Proceed with installation) and press Enter.

3. Verify Installation:

   • Once the installation finishes, close your current command prompt/terminal and open a new one (Command Prompt or PowerShell).

   • Type the following to check if Rust is installed:

     PowerShell

     rustc --version
     

   • If you see something like rustc 1.75.0 (timestamp), you are ready to go!

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Step 2: Write the "Hello, World!" Program

Rust files end with the .rs extension.

1. Create a folder for your project (e.g., C:\RustProjects).

2. Open a text editor (Notepad, Notepad++, or VS Code).

3. Type the following code exactly as it appears:

Rust

fn main() {
    println!("Hello, world!");
}

4. Save the file as main.rs inside your project folder.

Explanation of the code:

• fn main() { ... }: This defines the main function. It is the entry point where your program begins executing.

• println!("..."): This prints text to the console. The ! indicates that this is a macro, not a normal function (a key distinction in Rust).

• ;: Almost all lines in Rust must end with a semicolon.

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Step 3: Compile and Execute

Now you need to turn your text file into an executable program (.exe) that Windows can run.

1. Open your terminal (Command Prompt or PowerShell).

2. Navigate to the folder where you saved the file:

   PowerShell

   cd C:\RustProjects
   

3. Compile the code using the Rust compiler (rustc):

   PowerShell

   rustc main.rs
   

   (If successful, nothing will happen in the terminal, but a main.exe and main.pdb file will appear in your folder.)

4. Execute the program:

   PowerShell

   .\main.exe
   

Expected Output:

Plaintext

Hello, world!

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Summary of Commands

Goal	Command
Check Version	rustc --version
Compile	rustc filename.rs
Run (Windows)	.\filename.exe