C++ Variables
Variables are containers for storing data values.
In C++, there are different types of variables (defined with different keywords), for example:
int- stores integers (whole numbers), without decimals, such as 123 or -123double- stores floating point numbers, with decimals, such as 19.99 or -19.99char- stores single characters, such as 'a' or 'B'. Char values are surrounded by single quotesstring- stores text, such as "Hello World". String values are surrounded by double quotesbool- stores values with two states: true or false
Syntax
type variableName = value;
type variableName = value;Where type is one of C++ types (such as int), and variableName is the name of the variable (such as x or myName). The equal sign is used to assign values to the variable.
To create a variable that should store a number, look at the following example:
Example
Create a variable called myNum of type int and assign it the value 15:
int myNum = 15;
cout << myNum;
Create a variable called myNum of type int and assign it the value 15:
int myNum = 15;
cout << myNum;You can also declare a variable without assigning the value, and assign the value later:
Example
int myNum;
myNum = 15;
cout << myNum;
int myNum;
myNum = 15;
cout << myNum;watch this video
resources:
https://www.w3schools.com/cpp/cpp_variables.asp