A, b: integer; c: integer; d, e: string; f: real; g: extended; h, i, j, k: byte; l, m, n, o: byte; Basic numeric types include: longint (32-bit, hardware dependent), integer (16-bit, hardware dependent), shortint (8-bit). Their unsigned counterparts are cardinal (available only in some versions of Pascal), word, byte.

Decimal numbers are supported using the real type, and the extended type (available only in some versions of Pascal) Other types include the char (for holding characters), the string (as its name suggests). (For now, arrays, pointers, types and records will be covered in a later chapter) Functions/Procedures [ ] Before we begin, let us first clarify the key difference between functions and procedures. A procedure is set of instructions to be executed, with no return value. A function is a procedure with a return value. For readers familiar with C/C++, a procedure is simply a function with a void return value, as in void proc_sayhello(). The definition of function/procedures is thus as such.

Writeln ('jadi luas jajar genjang adalah:',lu:0:0); write (' ulang lagi[y/n]?' ); readln (ulang); until upcase (ulang) 'Y'.

Function Add ( A, B: Integer ): Integer; Forward; Function Bad ( A, B, C: Integer ): Integer; Begin Bad:= Add ( Add ( A, B ), C ); End; Function Add ( A, B: Integer ): Integer; Begin Add:= A + B; End; In this example, Add is first defined as a function taking two integer variables and returning an integer, but it is defined as a forward definition (prototype), and thus no body is written. Later, we see that Add is defined with a body.

Note that the two definitions of Add must be congruent with each other, or the compiler will complain. From the above example, we can also gather that in Pascal, a function's return value is given by the value of the variable with the function's name (or by the variable named result), when the function returns. As you can see in the Bad function, an undefined variable named 'Bad' has been assigned a value. That is the return value for the Bad function. Similarly, in Add, the variable named 'Add' has been assigned a value, which is its return value. Note that unlike C or other languages, assigning a return value to a function does not return from the function. Thus, the function will continue executing, as in the following example.

Function Weird ( A: Integer ): Integer; Var S: Integer; Begin S:= A / 2; If S = 10 Then Weird:= 0; Weird:= 2; End; If A happens to be 6, the function will not return the expected result of 1 or even 0. Buku metodologi penelitian sugiyono pdf. Instead, it would return a result of 2, because the function to execute continues even after the return value is set. Decompile ex4 to mq4 free download.