Robert Anderson - C coding: Ultimate Step-By-Step Guide To Learning C Programming Fast

The storing, manipulation and output of this data gives functionality. Variables hold this data, think of it as a box used to store a single item. C is a heavily typed language where each variable must have a defined type. A type is an identifying keyword that defines what the variable can hold. The first type we will come across is the integer, this can hold real numbers (numbers without a decimal place), an integer is defined below: int integerName = 3; - int is the defined type keyword, we will learn about the difference possibilities later. - integerName is the ID for the variable, this can be anything you want to call it, this is used to allow a variable to have a meaningful name, the variable could be defined as int pineapple = 3; , but its good practise to make them relevant.

However, there are a few exception to this as a variable cannot be a single digit i.e. 4 or cannot contain special characters (!$%^&*) etc. - = 3; Is the assignment section, where the values of 3 is placed in the integer box for use later . This also ends with a semi colon, this is used to signify the end of a line. This variable can now be used in valid areas of the program, like so: int newInteger = integerName The value of intergerName defined earlier (3) will now be placed in the newInteger variable and they will now both have the value of 3. The value of integerName doesnt change as it is just being copied and placed into newInteger .