Episode_2_Variables.cpp

/*
 
 Episode 2 : Variables
 
 Variable
 - used tp store data
 - to use variables in C++, you first must declare them in your code !
 - By declaring a variable, you are reserving space in the computer's memory fpr it
 
 */

#include <iostream>

// Variable Declaration
int main(){
    
    int variable = 120;
    int a = 5;
    int b = 4;
    
    int sum = a + b + variable;
    int product = a * b * variable;
    
    std::cout << a; // 5
    std::cout << std::endl;
    
    std::cout << sum; // 129
    std::cout << std::endl;
    
    std::cout << product << std::endl; // 2400
    std::cout << "The sum : " << sum << ", The product : " << product << std::endl;
    // This will print The sum : 129, The product 2400
    
    return 0;
}


/*
--------------------------------------------------------------------------
 
                            Part 1 : int a = 5;
 
 int        :   Data type
 a          :   Variable Name
 =          :   Assignment Operator
 number 5   :   By giving 5 to variable, you are initializing it!
 
 int a = 5; :   Initialized
 int a;     :   Uninitialized
 
 --------------------------------------------------------------------------
 
                            Part 2 : Arithmetic Operator
 Addition Operator          :   +  (plus)
 Subtraction Operator       :   -  (minus)
 Multiplication Operator    :   *  (time)
 Division Operator          :   /  (divided by)
 
 --------------------------------------------------------------------------
 
                            Summary
 
        - You declare variables in code
        - A variable with a given value is initialized
        - Declaring a variable = reserve space in memory
        - You can add/subtract/multiply/divided with arithmetoc operator
        - Print to the terminal like: std::cout << a
 */