This is the source code of the traditional Hello World program.

        
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println! is a macro that prints text to the console.

A binary can be generated using the Rust compiler: rustc.

       
$ rustc hello.rs

rustc will produce a hello binary that can be executed.

       
$ ./hello Hello World!

Activity

Click 'Run' above to see the expected output. Next, add a new line with a second println! macro so that the output shows:

       
Hello World! I'm a Rustacean!
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