Table of Contents
What are the prologue and epilogue of a function?
Prologue: (or preamble) Save registers and return address; transfer parameters. Epilogue: (or postamble) Restore registers; transfer returned value; return. The prologue and epilogue associated with each procedure are “overhead” that is necessary but does not do user computation.
What is epilogue in programming?
Function epilogue reverses the actions of the function prologue and returns control to the calling function. Returns to the calling function, by popping the previous frame’s program counter off the stack and jumping to it. …
What are two jobs of a subroutine’s Prolog?
The prolouge is what happens at the beginning of a function. Its responsibility is to set up the stack frame of the called function. The epilog is the exact opposite: it is what happens last in a function, and its purpose is to restore the stack frame of the calling (parent) function.
Can you have an epilogue without a prologue?
Make your narrative voice consistent on every page of your book! You don’t always need both a prologue and an epilogue. You can have only a prologue or only an epilogue. Treat your prologue or epilogue like a very short story.
What is the difference between a prologue and a preface?
Preface – An introduction written by the main author(s) to provide the story behind how they conceived and wrote the book. Prologue – An introduction that sets the scene for the story to come.
What is the function of prologue?
Prologue Definition Prologue comes from the Greek term prologos, which means “before word,” is an opening of a story that establishes the setting, and gives background details. Generally speaking, the main function of a prologue tells some earlier story, and connects it to the main story.
What is procedural meaning of prologue procedure?
Prolog, as a programming language, is a little unusual. It can be understood as a standard procedural language with two unusual properties. It is a procedural language like Pascal or Algol. One programs in a procedural language by writing procedures that carry out particular operations.
What is a file prologue?
A Prolog source file is a plain text file containing a Prolog program or part thereof. Prolog source files come in three flavours: A traditional. Prolog source file contains Prolog clauses and directives, but no module declaration (see module/1). They are normally loaded using consult/1 or ensure_loaded/1.
Why is it called a epilogue?
The word epilogue comes from the Greek epilogos, which means “conclusion word.” It always comes at the end of a literary work and is therefore the opposite of a prologue, which always comes at the beginning. As with the prologue, the epilogue originated with Greek playwrights and poets.
What is the main purpose of the prologue?
A good prologue performs one of many functions in a story: Foreshadowing events to come. Providing background information or backstory on the central conflict. Establishing a point of view (either the main character’s, or that of another character who is privy to the tale)