First Rust program

Let’s write the simple program in Rust language. Now, open the notepad file and write the following code:

Output:

Hello, world!  

main(): The main() function is always the first code in every Rust executable code. The main() function is enclosed in curly braces{}. The main() function does not contain any parameter as well as it does not return any value.

println!: It is a Rust macro. If it calls the function, then it does not contain ‘!’.

“Hello World”: It is a string passed as a parameter to the println!, and the string is printed to the console.

Procedure to create, compile and run the program

1. Open the notepad file and write the code in a notepad file.

2. Save the file with .rs extension.

3. Open the command prompt

4. Set the path of the directory. Suppose the project is located in D drive.

5. Compile the above program using the rustc command.

6. Finally, run the program by using the command filename.exe.