The Do-While loop is similar to the while loop. It is a conditional loop, just like the while loop, running the body of the loop while the condition is met. However, the big difference is that the do-while loop is a post-test loop. That means that the body runs at least once, and then there…
Previously, when we read from a file, it was easy to know what we were reading, as we created the file, and knew how many data elements we put into the file. But what if we don’t know? We just know we need to read the whole file and work with that data? That’s were…
A while loop says to perform a set of operations while a condition is true. It is known as a pre-test loop, because the condition is tested before the loop is run at all, meaning the body of the loop may never run. The general form for a while loop is: Notice that the loop…
The cin and cout commands are for reading and writing to the stream for the console. However, there are other streams, and we can set one up for reading from a file. Writing to a Text File To write to a file, you will need to create a variable used to access the file stream….
Where the char represents a single character, a string represents a collection of them acting as a single entity. On the “old days” a string was an array of characters, however, now a days, we have our own data type for them. A string is not a primitive data type, but an included class that…
The char data type is used to store a single character. The literal value is stored within a set single quotes. Old style C strings were actually an array of chars, but now we have our own string data type. Even when we store a number in a char, it is the char value, not…
A switch statement executes statements based upon the value of a variable. It is useful to replace a series of if statements, if the if statements are all looking for an equality value. The general form of this is below: Your variable must be an integer value, and must be enclosed in parentheses. The case…
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…
