Program lalala

///////////////////////////////////////////////////////////////////////////////
//  Program name: Logical and Arithmetic Expressions and Actions
//
//  What it does? - It shows all the logical and arithmetic operations
//  that can be used for a specific data type. The current data types
//  that are used in the program are: bool, integer, double and float.
//
//  How was it made? - It was made using iosteram and conio.h. Conio.h
//  was used to expect user input from getch() function, "About the author"
//  section. iostream was used for all the specific input and output stream
//  data usage, such as cout and cin.
//
//  Author: [Insert Name Here]
//
///////////////////////////////////////////////////////////////////////////////

#include <iostream>
#include <conio.h>

using namespace std;

int main() {
        // Using key for the main menu
        int key;
        // Declaring variables from type int
        int a = 3;
        int b = 4;
        // Declaring variables from type double
        double c = 5.2;
        double d = 6.33;
        // Declaring variables from type float
        float e = 3.149349;
        float f = 5.939135;
        // Declaring variables from type bool
        bool g = true;
        bool h = false;

// Creating the menu. Do the process, while the key is different
// than 5.
do {
    // Brief menu description, so the user knows what to input
    // and what to expect as an output
    cout << "Menu:" << endl;
    cout << "1. Show the variables" << endl;
    cout << "2. Comparison Actions" << endl;
    cout << "3. Logical Actions" << endl;
    cout << "4. About the author" << endl << endl;
    cout << "5. Exit" << endl;

    cout << endl << "Make your choice: ";
    cin >> key;
    // Actions for the menu
    switch (key) {
        case 1:
            // Clears the screen
            system("cls");

            cout << "Variable name: a" << " | Variable Value: " << a << " | Variable Type: Integer" << endl;
            cout << "Variable name: b" << " | Variable Value: " << b << " | Variable Type: Integer" << endl;

            cout << "Variable name: c" << " | Variable Value: " << c << " | Variable Type: Double" << endl;
            cout << "Variable name: d" << " | Variable Value: " << d << " | Variable Type: Double" << endl;

            cout << "Variable name: e" << " | Variable Value: " << e << " | Variable Type: Float" << endl;
            cout << "Variable name: f" << " | Variable Value: " << f << " | Variable Type: Float" << endl;

            cout << "Variable name: g" << " | Variable Value: " << e << " | Variable Type: Bool" << endl;
            cout << "Variable name: h" << " | Variable Value: " << f << " | Variable Type: Bool" << endl;
            break;
        case 2:
            // Clears the screen
            system("cls");

            int key2;
            // Creating a submenu for all the arithmetic operations
            do {
            cout << "Select option:" << endl;
            cout << "1. Equal or greater than" << endl;
            cout << "2. Equal or less than" << endl;
            cout << "3. Different than" << endl;
            cout << "4. Equal to" << endl;
            cout << "5. Less than" << endl;
            cout << "6. Greater than" << endl << endl;
            cout << "7. Exit" << endl;

            cout << endl << "Make your choice: ";
            cin >> key2;
            // Actions for the menu
            switch (key2) {
                case 1:

                    system("cls");
                    // Checks if variable a is greater than or equal to b
                    if(a >= b) {
                        cout << "Variable a is greater than or equal to b" << endl;
                    } else {
                        cout << "Variable b is greater than a" << endl;
                    }
                    // Checks if variable c is greater than or equal to d
                    if(c >= d) {
                        cout << "Variable c is greater than or equal to d" << endl;
                    } else {
                        cout << "Variable d is greater than c" << endl;
                    }
                    // Checks if variable e is greater than or equal to f
                    if(e >= f) {
                        cout << "Variable e is greater than or equal to f" << endl;
                    } else {
                        cout << "Variable f is greater than e" << endl;
                    }
                    // Checks if variable g is greater than or equal to h
                    if(g >= h) {
                        cout << "Variable g is greater than or equal to h" << endl << endl;
                    } else {
                        cout << "Variable h is greater than g" << endl << endl;
                    }
                    break;
                case 2:

                    system("cls");
                    // Checks if variable a is less than or equal to b
                    // It stays the same for all the other expressions
                    if(a <= b) {
                        cout << "Variable a is less than or equal to b" << endl;
                    } else {
                        cout << "Variable b is less than a" << endl;
                    }

                    if(c <= d) {
                        cout << "Variable c is less than or equal to d" << endl;
                    } else {
                        cout << "Variable d is less than c" << endl;
                    }

                    if(e <= f) {
                        cout << "Variable e is less than or equal to f" << endl;
                    } else {
                        cout << "Variable f is less than e" << endl;
                    }

                    if(g <= h) {
                        cout << "Variable g is less than or equal to h" << endl << endl;
                    } else {
                        cout << "Variable h is less than g" << endl << endl;
                    }
                    break;
                case 3:

                    system("cls");
                    // Checks if variable a is NOT equal to b
                    // It stays the same for all the other expressions
                    if(a != b) {
                        cout << "Variable a is different from b" << endl;
                    } else {
                        cout << "Variable b is not different from a" << endl;
                    }

                    if(c != d) {
                        cout << "Variable c is different from d" << endl;
                    } else {
                        cout << "Variable d is not different from c" << endl;
                    }

                    if(e != f) {
                        cout << "Variable e is different from f" << endl;
                    } else {
                        cout << "Variable f is not different from e" << endl;
                    }

                    if(g != h) {
                        cout << "Variable g is different from h" << endl << endl;
                    } else {
                        cout << "Variable h is not different from g" << endl << endl;
                    }
                    break;
                case 4:

                    system("cls");
                    // Checks if variable a is equal to b
                    // It stays the same for all the other expressions
                    if(a == b) {
                        cout << "Variable a is equal to b" << endl;
                    } else {
                        cout << "Variable b is not equal to a" << endl;
                    }

                    if(c == d) {
                        cout << "Variable c is equal to d" << endl;
                    } else {
                        cout << "Variable d is not equal to c" << endl;
                    }

                    if(e == f) {
                        cout << "Variable e is equal to f" << endl;
                    } else {
                        cout << "Variable f is not equal to e" << endl;
                    }

                    if(g == h) {
                        cout << "Variable g is equal to h" << endl << endl;
                    } else {
                        cout << "Variable h is not equal to g" << endl << endl;
                    }
                    break;
                case 5:
                    // Clears the screen
                    system("cls");
                    // Checks if variable a is less than b
                    // It stays the same for all the other expressions
                    if(a < b) {
                        cout << "Variable a is less than b" << endl;
                    } else {
                        cout << "Variable a is not less than b" << endl;
                    }

                    if(c < d) {
                        cout << "Variable c is less than d" << endl;
                    } else {
                        cout << "Variable c is not less than d" << endl;
                    }

                    if(e < f) {
                        cout << "Variable e is less than f" << endl;
                    } else {
                        cout << "Variable e is not less than f" << endl;
                    }

                    if(g < h) {
                        cout << "Variable g is less than h" << endl << endl;
                    } else {
                        cout << "Variable g is not less than h" << endl << endl;
                    }
                    break;
                case 6:

                    system("cls");
                    // Checks if variable a is greater than b
                    // It stays the same for all the other expressions
                    if(a > b) {
                        cout << "Variable a is greater than b" << endl;
                    } else {
                        cout << "Variable a is not greater than b" << endl;
                    }

                    if(c > d) {
                        cout << "Variable c is greater than d" << endl;
                    } else {
                        cout << "Variable c is not greater than d" << endl;
                    }

                    if(e > f) {
                        cout << "Variable e is greater than f" << endl;
                    } else {
                        cout << "Variable e is not greater than f" << endl;
                    }

                    if(g > h) {
                        cout << "Variable g is greater than h" << endl << endl;
                    } else {
                        cout << "Variable g is not greater than h" << endl << endl;
                    }
                    break;
            }
        } while(key2 != 7); // if any other key other than 7 is pressed, it will show the menu
            system("cls");
            break;

        case 3:
                // Clears the screen
                system("cls");

                int key3;
                // Creating another submenu for the logical operations
                do {
                cout << "Select option:" << endl;
                cout << "1. Logical NOT" << endl;
                cout << "2. Logical AND" << endl;
                cout << "3. Logical inclusive OR" << endl << endl;
                cout << "4. Exit" << endl;

                cout << endl << "Make your choice: ";
                cin >> key3;
                // Actions for the options
                switch (key3) {
                    case 1:
                        system("cls");
                        // This time, we will show how it looks like one logical
                        // expression and what happens if integer gets its value
                        // from the expression.
                        // What actually happens here?
                        // The variable a is shown before it has been changed
                        // On the change, the variable a receives the value
                        // of a boolean statement which states: is a true?
                        // In our case, a has anything but a zero, so its true.
                        // Though, the opposite of true is false.Therefore:
                        // a receives the value of 0. The same way goes for
                        // all the other variables as shown below, except
                        // for the boolean variables. They receive the
                        // opposite value they have in theirelves.
                        // For example: a = true; !a = false;
                        cout << "Variable a value before logical NOT: " << a << endl;
                        a = !a;
                        cout << "Variable a value after logical NOT: " << a << endl << endl;

                        cout << "Variable b value before logical NOT: " << b << endl;
                        b = !b;
                        cout << "Variable b value after logical NOT: " << b << endl << endl;

                        cout << "Variable c value before logical NOT: " << c << endl;
                        c = !c;
                        cout << "Variable c value after logical NOT: " << c << endl << endl;

                        cout << "Variable d value before logical NOT: " << d << endl;
                        d = !d;
                        cout << "Variable d value after logical NOT: " << d << endl << endl;

                        cout << "Variable e value before logical NOT: " << e << endl;
                        e = !e;
                        cout << "Variable e value after logical NOT: " << e << endl << endl;

                        cout << "Variable f value before logical NOT: " << f << endl;
                        f = !f;
                        cout << "Variable f value after logical NOT: " << f << endl << endl;

                        cout << "Variable g value before logical NOT: " << g << endl;
                        g = !g;
                        cout << "Variable g value after logical NOT: " << g << endl << endl;

                        cout << "Variable h value before logical NOT: " << h << endl;
                        h = !h;
                        cout << "Variable h value after logical NOT: " << h << endl << endl;

                        break;
                    case 2:

                        system("cls");
                        // What it actually happens?
                        // Even tho it's written in the cout, let's explain
                        // The logical AND statement states that both of the
                        // expression sides are equally true or false.
                        // What does that mean?
                        // If one expression is false and the other is true
                        // the whole statement doesn't make it true at all,
                        // because to be true, it needs both sides to be
                        // true or false, depending on the expression
                        // It covers the same for the other if statement
                        if(a <= b && c >= d) {
                            cout << "Both expressions are correct" << endl;
                        } else {
                            cout << "One of the expressions is not correct" << endl;
                        }

                        if(e <= f && g == h) {
                            cout << "Both expressions is correct" << endl << endl;
                        } else {
                            cout << "One of the expressions is not correct" << endl << endl;
                        }

                        break;
                    case 3:

                        system("cls");
                        // What it actually happens?
                        // Even tho it's written in the cout, let's explain
                        // The logical inclusive OR statement states that one of the
                        // expression sides is true.
                        // What does that mean?
                        // If one expression is false and the other is true
                        // the whole statement is not false at all.
                        // You can have only one true expression and the
                        // whole statement will be turned out as a true
                        // It stays the same for the other statement
                        // as well.
                        if(a <= b || c >= d) {
                            cout << "One of the expressions is correct" << endl;
                        } else {
                            cout << "None of the expressions are correct" << endl;
                        }

                        if(e == f || g == h) {
                            cout << "One of the expressions is correct" << endl << endl;
                        } else {
                            cout << "None of the expressions are correct" << endl << endl;
                        }

                        break;
                }
            } while(key3 != 4);

            system("cls");
            break;
        case 4:
            system("cls");
            // Some author notes and about the author.
            cout << "Program Name: Logical and Arithmetic Expressions and Actions" << endl;
            cout << "The program was made by [Insert Girl Name Here]" << endl;
            cout << "Best Regards!" << endl << endl;
            cout << "Press any key to get back in the main menu....";
            //Expects the user to press any key to get back to the main menu
            getch();
            system("cls");
            break;
    }

} while(key != 5);

    return 0;
}