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Learning Qlik Sense: The Official Guide

You're reading from   Learning Qlik Sense: The Official Guide Get to grips with the vision of Qlik Sense for next generation business intelligence and data discovery

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Product type Paperback
Published in Feb 2015
Publisher
ISBN-13 9781782173359
Length 230 pages
Edition 1st Edition
Languages
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Toc

Table of Contents (14) Chapters Close

Preface 1. Coding with C++ FREE CHAPTER 2. Variables and Memory 3. If, Else, and Switch 4. Looping 5. Functions and Macros 6. Objects, Classes, and Inheritance 7. Dynamic Memory Allocation 8. Actors and Pawns 9. Templates and Commonly Used Containers 10. Inventory System and Pickup Items 11. Monsters 12. Spell Book Index

Writing our own functions

Say, we want to write some code that prints out a strip of road, as shown here:

cout << "*   *" << endl;
cout << "* | *" << endl;
cout << "* | *" << endl;
cout << "*   *" << endl;

Now, say we want to print two strips of road, in a row, or three strips of road. Or, say we want to print any number of strips of road. We will have to repeat the four lines of code that produce the first strip of road once per strip of road we're trying to print.

What if we introduced our own C++ command that allowed us to print a strip of road on being called the command. Here's how that will look:

void printRoad()
{
  cout << "*   *" << endl;
  cout << "* | *" << endl;
  cout << "* | *" << endl;
  cout << "*   *" << endl;
}

This is the definition of a function. A C++ function has the following anatomy:

Writing our own functions

Using...

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