Contoh Program Procedure Dan Function Pada Pascal

Di bawah adalah tulisan saya yang terdahulu dan lebih pascal. Procedure dan Function di Algoritma & Pascal Pengetahuan yang akan sangat membantumu adalah variable scope. Nov 02, 2015  Di bawah adalah tulisan saya yang terdahulu dan lebih pascal. Procedure dan Function di Algoritma & Pascal Pengetahuan yang akan sangat membantumu adalah variable scope.

Ibsurgeon first aid cracked. 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. 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.