Declaring a variable in C++

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Declaring a variable in C++ is very simple

In computer programming we will be manipulating a value.

In order to manipulate a value we will store it temporarily to a variable which is used as reference in the memory.

Before using a variable we must declare it first.

In declaring a variable we must used a data type.

The following are primitive data types

int - this is used if the value are whole numbers. ex. 100
float - this is used if the value has fractional parts. ex. 38.9
char - this is used if the value has a single character only.
char* - a pointer to a char, this is used if the value are more than one characters.

To declare a variable:

Syntax: data_type variable_name;
ex. int number;
float grade;
char letter;
char* address;

if we want to assign a value to a variable we will be using the assignment operator (=)

ex. number = 10;
grade = 90.10;
letter = 'a';
address = "Philippines";

That is how easy the variable declaration in C++ and how to assign a value to it.

enjoy.

Happy programming...!!



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