Solved-Intro to Graphics Lab 1 -Solution

Description

Lab Objective

Learn how to write basic C++ code.

This lab consists of completing some exercises with writing C++ code, in preparation for the rest of the work in this course.

About C++

The C++ programming language is an extension of the C programming language. These exercises will give you experience with some of the extensions the C++ language added to C.

The C++ language is often the topic of interview questions, so studying it seriously can have a big payoff for your career.

Submission Guidelines

Please answer the exercises below and upload your solution to Connex. Keep your answers short and simple, these are just warm-up exercises. Your code will not be compiled, so you don’t need to submit any Makefiles or executables or similar. We just want to see the code.

Object-Orientation in C++

C++ enables object-oriented programming by adding features like member functions, virtual functions, and inheritance. These exercises will familiarize you with object-oriented programming in C++.

Write a simple class that uses with a private variable and a public member function.

Create an interface class with a pure virtual function. Create another class that inherits from it,

and give a concrete implementation of the pure virtual function.

Virtual functions in C++ are internally implemented using a virtual function pointer table. Summarize in your own words how a calling virtual functions work using a vtable.

Generic Types in C++

The C++ programming language allows you to create a “class template”, a concept similar to generics in Java/C#. For example, you can create a class “std::list<T>”, which can be used to create a list of any type, like a “std::list<int>” or a “std::list<float>” or a “std::list<std::string>”. This exercise is about writing a simple class template.

Write a simple class template “LinkedListNode<T>”, which stores an object of type “T” and a pointer to the next node of type “LinkedListNode<T>*”. It doesn’t need to have any member functions.

Standard Containers in C++

Concatenate two strings using the std::string class. o Note: #include <string>

Create an empty std::vector<int> then push_back() the values 1,2,3 to it. o Note: #include <vector>

Create a std::map<std::string, int> and insert into it the key-value pairs {“one”,1}, {“two”,2}, and {“three”,3}.

o Note: #include <map>

Operator Overloading in C++

The C++ programming language allows you to define standard math operators for your own classes. This is usually used for vector and matrix math, so you’ll see it used a lot in such linear algebra libraries. This exercise will give you a chance to practice implementing operator overloading.

Define operator+ and operator+= for the simple 3D vector class below:

struct Vector3 {

float x, y, z;

};