Computers and Programming

Listen to this article: https://youtu.be/MdGPC9C5QEI According to cplusplus.com: "A copy constructor is a special constructor for a class/struct that is used to make a copy of an existing instance." The Implicit Copy Constructor      If a copy constructor is not declared, the compiler will use a default one implicitly. The default constructor performs a member-wise copy of the source object. This means that each member is initialized using the corresponding member of the initializer.     Problem: Raw pointers.      If the object contains raw pointers, a member-wise copy may not be appropriate for use. This can cause problems with dangling pointers, double frees, and other undefined behaviour resulting from destructing objects.     Solution: Deep copy.      We explicitly define our own copy constructor when we want to perform a deep copy. That is, instead of copying the pointer, our copy constructor will copy what the po...

https://github.com/pereiradaniel/CPP_CRASH_COURSE/blob/master/P1C4/storage_duration.cpp

https://github.com/pereiradaniel/CPP_CRASH_COURSE/blob/master/P1C3/championship_linked_list.cpp

https://github.com/pereiradaniel/CPP_CRASH_COURSE/blob/master/P1C3/championship_linked_list.cpp

https://github.com/pereiradaniel/CPP_CRASH_COURSE/blob/master/P1C2/f1points.cpp

A while back I wanted to review the book C++ Crash Course  as a way of making sure I had explored the various facets of C++, but was side-tracked with the learning of other programming languages such as Java . Now I have some time to review my knowledge of these languages, and I want to take this opportunity to refresh my memory of certain concepts, and perhaps even spend time delving into aspects of C++ that I never fully grasped. In my review of the Overture to C Programmers chapter, I did not find anything of of extreme interest. It was mostly a review of the basics of C++, however there were some very competent explanations of some concepts. Probably a bit too much detail if you are somebody already familiar with C, but for those who are new it may be worthwhile. Overall, Chapter 1 made me realize how easily I confuse C with C++ code. This is in part because most well-written C programs are valid C++ programs. Nothing new was learned, but at least I got a chance to set up my ...

Started learning Python recently by following this tutorial. Here is a link to my notes, which you may or may not find helpful if you are new to Python. The notes are based on the W3 Schools tutorial that I am doing, and I include my own notes and experiments along with them. https://github.com/pereiradaniel/w3_python/blob/master/notes.md

Programs: // 1.   Create a class Vehicle. //      a.  The class should have two fields: //          i.  no_of_seats and no_of_wheels. //      b.  Create two objects //          i.  Motorcycle and Car for this class. //      c.  Your output should show the descriptions for Car and Motorcycle package A6 ; class Vehicle {     // Initialize attributes:     int no_of_seats ;     int no_of_wheels ;     // Two-argument constructor:     Vehicle ( int seats , int wheels ) {         no_of_seats   = seats ;         no_of_wheels = wheels ;     }     // Displays values of attributes:     String display () {         return "no_of_seats = " + no_of_seats + ", no_of_wheels = " + no_of_wheels + "." ;     }   ...

Demonstration of converting cm or inches without using functions. Repl: https://replit.com/@pereiradaniel/Convert-cm-to-inches-function Git repo: https://github.com/pereiradaniel/c_programs/blob/master/metric_imperial_conv/conv2_alt.c  

Demonstration of using functions to convert cm and inches with a main program loop. Some constraints applied to protect against incorrect inputs. Uses a goto statement to emergency exit on wrong input. Repl: https://replit.com/@pereiradaniel/Convert-cm-or-inches-functions Git repo: https://github.com/pereiradaniel/c_programs/blob/master/metric_imperial_conv/conv2.c  

Simple program demonstrating conversion of cm to inches without implementing a function. This is simpler, but your ideal implementation may depend upon a variety of factors requiring your careful consideration. Repl: https://replit.com/@pereiradaniel/Convert-cm-to-inches-no-function Git repo: https://github.com/pereiradaniel/c_programs/blob/master/metric_imperial_conv/conv_alt.c  

Simple program demonstrating one way to convert cm to inches and display the result to the user. Repl: https://replit.com/@pereiradaniel/Convert-cm-to-inches-function Git repo: https://github.com/pereiradaniel/c_programs/blob/master/metric_imperial_conv/conv.c  

A program that converts decimal and binary numbers. Repl: https://replit.com/@pereiradaniel/Dual-BinaryDecimal-Converter Git repo: https://github.com/pereiradaniel/c_programs/blob/master/bin_dec_conv/dual_conversion/dual_conv.c  

Convert a decimal number to binary using a non-recursive function. Repl: https://replit.com/@pereiradaniel/Decimal-to-binary-non-recursive Git repo:  https://github.com/pereiradaniel/c_programs/blob/master/bin_dec_conv/non_recursive/bin_dec_conv.c  

Recursive method of decimal to binary conversion. Repl: https://replit.com/@pereiradaniel/Decimal-to-binary-recursive Git repo: https://github.com/pereiradaniel/c_programs/tree/master/bin_dec_conv/recursive  

Calculator now catches divide by zero error by testing to see if either user inputs are equal to 0, otherwise it executes the division. Repl: https://replit.com/@pereiradaniel/Calculator-Exponent-function-added Git repo: https://github.com/pereiradaniel/c_programs/blob/master/calc/calc4.c  

Added exponent function to calculator, with improved messages for user. Repl: https://replit.com/@pereiradaniel/Calculator-Exponent-function-added Git repo: https://github.com/pereiradaniel/c_programs/blob/master/calc/calc3.c  

Calculator program now loops until user quits. Repl: https://replit.com/@pereiradaniel/Calculator-Main-loop-added Git repo: https://github.com/pereiradaniel/c_programs/blob/master/calc/calc2.c