61 lines
1.4 KiB
Markdown
61 lines
1.4 KiB
Markdown
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# Hello, world!
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This pages shows you how to write and run your first THP script.
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## Prerequisites
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You will need to have PHP and THP installed. If you haven't already, see the
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install page.
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## Writing the program
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Create a new file called `hello.thp`, and inside write the following (you can
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copy and paste):
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```thp
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print("Hello, world!")
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```
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Then, save the code.
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## Running the program
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Open a terminal in the folder where you created the file `hello.thp`.
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Then write the following command and press enter:
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```sh
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thp hello.thp
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```
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This will run the program, and produce the following result:
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```sh
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Hello, world!
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```
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Congratulations! You just wrote your first THP program!
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## Explaining the program
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Now let's understand the code.
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```thp
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print("Hello, world!")
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```
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There are 2 essential components:
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- `print` - print is a "function", it takes some value and performs some action with it.
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In this case, it takes a text and displays it in the terminal.
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- `"Hello, world!"` - Is the text that the function `print` takes, and displays in
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the terminal. Note that it is enclosed in quotation marks.
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## What to do next
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You can now experiment with the program you wrote. What happens if you change the text?
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What if you don't put quotation marks? And what are the parenthesis for?
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To continue learning about THP, continue to the next page, where you'll learn
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about "datatypes".
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