1.2 KiB
Input & Output
At the end of the day, a program takes some input, and transform it to some output. We will explore how to receive data, and also present it.
Output
There are many ways to show the result of our programs.
One of them is called standard output, which in simplified
terms, is the terminal from where we run our program.
print
Create an empty file, and name it hello.php. We will create
a program that shows a result to our screen.
Inside hello.php write the following code:
print("Hello")
Then, open a terminal and run the program with the thp command.
After you press ENTER, you will see in the terminal the text "Hello".
$ thp hello.thp # Copy this command and run it
Hello # This is the output of our program
The thp function print allows us to display something in the terminal.
If you change the hello.php file, and run it, you'll see how it changes.
print(322)
$ thp hello.php
322
Or, if you copy print multiple times, each will show something in the screen.
print("Hello")
print("This is an example")
print("of having many prints")
$ thp hello.php
Hello
This is an example
of having many prints