Chapter_5.txt

(QUESTION 1)

// header defintion

#ifndef Header_h
#define Header_h

namespace myConstants
{
    const double gravity(9.8); // in meters/second squared
}

#endif /* Header_h */



In your main code file:

# include <math.h>
#include <iostream>
#include "Header.h"

// gets initial height from user and returns it
double getInitialHeight()
{
    std::cout << "Enter the height of the tower in meters: ";
    double initialHeight;
    std::cin >> initialHeight;
    return initialHeight;
}

// Returns height from ground after "seconds" seconds
double calculateHeight(double initialHeight, int seconds)
{
    // Using formula: [ s = u * t + (a * t^2) / 2 ], here u(initial velocity) = 0
    double distanceFallen = (myConstants::gravity * seconds * seconds) / 2;
    double currentHeight = initialHeight - distanceFallen;
    
    return currentHeight;
}

// Prints height every second till ball has reached the ground
void printHeight(double height, int seconds)
{
    if (height > 0.0)
    {
        std::cout << "At " << seconds << " seconds, the ball is at height:\t" << height <<
        " meters\n";
    }
    else
        std::cout << "At " << seconds << " seconds, the ball is on the ground.\n";
}

void calculateAndPrintHeight(double initialHeight, int seconds)
{
    double height = calculateHeight(initialHeight, seconds);
    printHeight(height, seconds);
}

int getTimeRequired(double d){
    // using the formula x= x0 + (v0)t + 0.5* gravityt^2
    // this calculates the time required for the entered height to hit the ground and rounds it up.
    int required_time;
    required_time = ceil(sqrt((2*d)/myConstants::gravity));
    return required_time;
    
}

int main()
{
    const double initialHeight = getInitialHeight();
    const int time = getTimeRequired(initialHeight);
    // once we know both the height and required time we can use the simple for loop bellow to print out the required output.
    
    for (int i =0; i<= time; i++){
        calculateAndPrintHeight(initialHeight, i);
    }
   
    
    return 0;
}

(QUESTION 2)

// This method is my adaptation of the game.

#include <cstdlib>
#include <iostream>

void IsRightValue(int right_val) {
	int billy;
	std::cout << "Enter your first guess:";
	std::cin >> billy;
	for (int i = 0; i<7; i++) {
		int attempt_num = i + 1;
		std::cout << "Attempt Number " << attempt_num ;

		if (billy == right_val) {
			std::cout << " ~ You're right " << right_val << " is the right number!!!! \n";
			break;
		}
		else if (billy > right_val) {
			std::cout << " ~ Your guess is higher than actual value\n";
		}
		else if (billy <right_val){
			std::cout << " ~ Your guess is lower than actual value\n";
		}
		if (i != 6) {
			std::cout << " \n Enter your next attempt : ";
			std::cin >> billy;
		}

	}

}

int main() {
	int b;
	b = 1;
	while (b == 1) {
		int random_num = rand() % 100 + 1;
		IsRightValue(random_num);
		int c = 1;
		while (c == 1) {
			char another_round;
			std::cout << "\n Do you want to play another game ? (enter Y or N)\n => ";
			std::cin >> another_round;
			if (another_round == 'Y') {
				break;
			}
			else if (another_round == 'N')
			c = 0;
			b = 0;
			
		}
	}

	return 0;
}