 Hi everyone, in this lesson we want to write simple program Hello World in Rust programming language. You could go to the website rustlang.org and you can install Rust on your machine. But instead of that, you could also go to the site play.rustlang.org and we have Rust Playground where we can type our code and run it. As you can see in this editor we have already written main function with mandatory need to print Hello World to the command line. So if we run our program, our program prints Hello World on command prompt. You have here on Playground a lot of other options. You can see your code into assembler or you can see it in finally production version as LLVM file. So we can print Hello World to the screen by simply making function with keyword fn and call function print line with exclamation mark that's mandatory printing and inside it as an argument will put text Hello World which will be printed to the screen. That's all in this lesson. Thanks for watching.