Cisco CSE Certifications Exam 646-230

When programming in 642-901 C++, we need a way to store data that can be manipulated by our program. Data comes in a variety of formats, so the compiler needs a way to differentiate between the different types. Right now, we'll concentrate on using bytes. The type name for a byte in C++ is 'char'. It's called char because a byte is often used to represent characters. We won't go into that right 646-230 now. We only want to use it for its numerical representation.

Let's write a program that will print each value that a byte can hold. How do we do that? We could write a loop that goes from 0 to 255. We'll set our byte to 0 and add one to it every time through the loop. As a side note, do you know what would happen if you added 1 to 255? 650-621 No combination will represent 256 unless we add more bits. If you look at the diagram above, you will see that the next value (if we could have another digit) would be 256. So our byte would look like this.