In F Programming Language (also known as FP), you can write “Hello World!” using the following code:
MODULE HelloWorld;
IMPORT Out;
PROC PrintHelloWorld() =
Out.String("Hello World!");
BEGIN
PrintHelloWorld();
END HelloWorld.
This program defines a module named HelloWorld. Inside this module, it imports the Out library (which provides output capabilities), then defines a procedure PrintHelloWorld that prints “Hello World!” to the console using the Out.String() function. Finally, the program calls PrintHelloWorld().
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