#declaring variables

A variable consists of a dual nature. It has a data type and a name.

Every variable must be given a name and a data type before it can be used. This is called declaring a variable. The syntax for declaring a variable is:

or

Note that a comma follows each identifier in the list except the last identifier, which is followed by a semicolon. By convention, the identifiers for variable names start…

Declaring Variables and Other Fun Stuff

Now we know how to define an identifier, what a data type is, what a variable is– let’s learn how to declare a variable! When we declare a variable, we specify the name of the variable AND the data type. The syntax rule is:

datatype identifier;

For example:

int counter;

double interestRate;

char grade;

You can store a value in a variable by using an assignment statement in the following form:

var…