You will find defining a function in C++ very similar to defining a function in Python. There are some differences however. Let’s look at the general form, and then define the sections from here. Functions must be defined outside of other functions. C/C++ doesn’t have the concept of a sub or inner function like some…
We’ve seen the break in a switch statement. It stops running the blocks of code, and simple exits out of the switch. In the same manner, if you use a break in a loop, it exits us from the loop prematurely (not by the loop condition). The continue keyword, moves us to the end of…
The for loop is the counting loop of C++. It is usually designed to run a specific number of times, and then end. With it, it keeps a counter, to let you know where in the loop you are – useful when looping through an array which will look at soon enough. The general form…
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….
Setting the precision of numeric data is a little more complicated in C++ than in some other languages.First you, will need to include iomanip as a library to use some of these modifiers. A common method is to pass in stream manipulators to the stream to get numbers for format correctly. Some of the modifiers…
