C++ gives you a lot of ways to do math, built into the language directly. Unfortunately, it can get complex – so we’re going to focus on the simple stuff. The order of operation in C++ is the same as in algebra, so that is easy to remember. + is addition – is subtraction *…
Identifiers An identifier is a name of a variable or function in C++. The same basic rules you had in Python exist in C++. Can’t be a reserved word/keyword Case sensitive (name, Name, and NAME are all different things) Can only be used in one context Must start with a letter May have letters, numbers,…
Let’s take the simple example from before, and work on getting inputs from a user: In the example, we specifically set the radius, however we want to get that information from the user. With Python, we had a single command, however in C++ getting an input will consist of two steps. First we need to…
Let’s walk through the steps to create a simple C++ program that will calculate a circle’s area using the formula area = pi x r2 First we’ll set up our preprocessor directives, and an empty main function. Next we will need to define variables that will be used by the program. In C/C++ we must…
A little bit of history C++ is an expansion of the C programming language. It’s main addition was the ability to create and use objects. That makes it an Object Oriented Programming (OOP) based language. You do not have to start with objects however, as it retains all of the C procedural language constructs and…
Let’s look at a simple program and work through it step by step. #include #include statements are at the top of the file, and let you include any libraries you might need. iostream, in our example is used to help process input and output. You might think this is standard, but if you are building…
