What is a subprogram example?
In computer programming language: Control structures. …is an example of a subprogram (also called a procedure, subroutine, or function). A subprogram is like a sauce recipe given once and used as part of many other recipes. Subprograms take inputs (the quantity needed) and produce results (the sauce).
What are the types of subprogram?
PL/SQL has two types of subprograms called procedures and functions. Generally, you use a procedure to perform an action and a function to compute a value. Like unnamed or anonymous PL/SQL blocks, subprograms have a declarative part, an executable part, and an optional exception-handling part.
What is a subprogram call?
A subprogram call is an explicit request that the called subprogram be executed. A subprogram is said to be active if, after having been called, it has begun execution but has not yet completed that execution.
What is a subprogram in PPL?
A Subprogram is a program inside any larger program that can be reused any number of times. Characteristics of a Subprogram: (1) A Subprogram is implemented using the Call & Return instructions in Assembly Language.
What are the two issues that arise when subprogram names are parameters?
# What are the two issues that arise when subprogram names are parameters? The first issue that arises is type checking the parameters of the activation of the subprogram that was passed as a parameter. The second complication appears in languages that allow nested subprograms.
What is subprogram in Fortran?
A subprogram is a (small) piece of code that solves a well defined subproblem. In a large program, one often has to solve the same subproblems with many different data. Instead of replicating code, these tasks should be solved by subprograms . The same subprogram can be invoked many times with different input data.
What is a generic subprogram?
A generic subprograms is a subprogram which have parametric polymorphism. A generic subprogram can accept different types of values of same single memory location. Parametrically polymorphic subprograms are often called generic subprograms. C++ provide a kind of compile-time parametric polymorphism.
What are the benefits of subprogram?
Benefits of using subprograms
- Subprograms are usually small in size, which means they are easier to write, test and debug than programs.
- Subprograms can be saved separately as modules and used again in other programs.
- A subprogram may be used repeatedly at various points in the main program.
Is function a subprogram?
Functions and subroutines are FORTRAN’s subprograms. Most problems that require a computer program to solve them are too complex to sit down and work all the way through them in one go.
What is call in FORTRAN?
A CALL statement evaluates the actual arguments, association of the actual arguments with the corresponding dummy arguments, and execution of the statements in the subroutine. Return of control from the referenced subroutine completes the execution of the CALL statement.
How are subprogram defined and invoked?
A PL/SQL subprogram is a named PL/SQL block that can be invoked repeatedly. If the subprogram has parameters, their values can differ for each invocation. A subprogram is either a procedure or a function. Typically, you use a procedure to perform an action and a function to compute and return a value. Topics.
What is the meaning of subprogram?
Definition of subprogram. : a semi-independent portion of a program (as for a computer)
How to implement a subprogram in assembly language?
(1) A Subprogram is implemented using the Call & Return instructions in Assembly Language. (2) The Call Instruction is present in the Main Program and the Return (Ret) Instruction is present in the subprogram itself.
What happens to the main program after the subprogram completion?
Moreover, after the completion of the subprogram the main program executes from the next sequential address present in the Program Counter . (4) For the implementation of any subprogram, a “Stack” is used to store the “Return Address” to the Main Program .
What is the return address of the subprogram?
(4) For the implementation of any subprogram, a “Stack” is used to store the “Return Address” to the Main Program . Here, Return Address means the immediately next instruction address after the Call Instruction in the Main program.