1. C++ Testing and Classes
G Carl Evans

2. Catch2
Catch is a testing framework for C++ it is used in many places including in the CS225.
The tutorial is here

3. How hard was forth code review assignment?
Easy
Moderate
Challenging
Unreasonable

4. How long did fourth assignment take?
Less than 3 hours
3 to 6 hours
6 to 9 hours
9 to 12 hours
More than 12 hours

5. Things start doing Get C++ (Xcode/Visual Studio/gcc)
Make a helloworld.cpp program and build it.

6. Classes in C++ File layout .h .cpp
Declare structure of the object including member variables
Declare member functions (methods)
.cpp
Define functions of the class

7. Constructors
Run when an object is created before the object is available to make the object exist in a coherent state.
Automatic Default Constructor
Automatic Default: created by the compiler
Default: takes no arguments
Initializes member objects using their default constructor
Non-object values undefined
Only generated if no constructors written

8. Constructors User Defined
Functions with the same name as the class define constructors
Initialization Lists
Comma separated list
member_variable_(expression)
Run before the body of the constructor
Default Arguments
Provide values for missing agruments
explicit StudentRecord(std::string name, int grade = 0);
StudentRecord::StudentRecord(std::string name, int grade) : name_(name), grade_(grade) {
//body }

9. Gradebook class

10. What System do you use for this class?
Windows
Macintosh
Linux
More than one of the above

11. What development environment did you set up for C++?
Visual Studio
Xcode
Editors and command line
Other (Eclipse/Clion/???)
What is a development environment?

12. Operator Overloading
Make code more readable and intuitive by allowing more natural expression Change the behavior of many of the standard operators based on the types that are being used. We have seen the overload of [] with map and vector We have seen the overload of -> and * with the iterator in map

13. Operators that can be overloaded in C++
Operator Category
Operators
Arithmetic
+ - * / % ++ --
Bitwise
& | ^ ~ >> <<
Relational
< <= > >= == !=
Logical
! && ||
Assignment =
+= -= *= /= %= ˆ= &= |= >>= <<= <= >=
Other
() [] -> , ->

14. Stream extraction and insertion
std::ostream& operator<<(std::ostream& os, const T& obj){ // write obj to stream return os; } std::istream& operator>>(std::istream& is, T& obj){ // read obj from stream if( /* T could not be constructed */ ) is.setstate(std::ios::failbit); return is;

15. Student Record