Type fpc hello.pas at command prompt and press enter to compile your code. Open a command prompt and go to the directory, where you saved the file.

Open a text editor and add the above-mentioned code. The statement readkey allows the display to pause until the user presses a key. The statement writeln('Hello, World!') uses the writeln function available in Pascal which causes the message 'Hello, World!' to be displayed on the screen. The lines within (*.*) will be ignored by the compiler and it has been put to add a comment in the program.

The begin statement of the main program block is where the program execution begins. However, the end statement indicating the end of the main program is followed by a full stop (.) instead of semicolon ( ). Every block in Pascal is enclosed within a begin statement and an end statement. The next lines enclosed within begin and end statements are the main program block. The second line of the program uses crt is a preprocessor command, which tells the compiler to include the crt unit before going to actual compilation. The first line of the program program HelloWorld indicates the name of the program. Let us look various parts of the above program − Uses įollowing is a simple pascal code that would print the words 'Hello, World!' − Following format shows the basic syntax for a Pascal program −

Statements and Expressions within each blockĮvery pascal program generally has a heading statement, a declaration and an execution part strictly in that order.

Pascal Program StructureĪ Pascal program basically consists of the following parts − Before we study basic building blocks of the Pascal programming language, let us look a bare minimum Pascal program structure so that we can take it as a reference in upcoming chapters.

Turbo pascal programok