Question 1

#include <iostream>

using namespace std;

int main ()
{
	float x, y, area, perimeter;

	cout << "Length = ";
	cin >> x;
	cout << "Width = ";
	cin >> y;
	
	area = x * y;
	perimeter = (x + y) * 2;

	cout << "Area = " << area << endl;
	cout << "Perimeter = " << perimeter << endl;

	return 0;
}

Question 2

#include <iostream>

using namespace std;

int main ()
{
	int x;

	cout << "Enter an integer: ";
	cin >> x;

	cout << "The next three consecutive integers are " << x+1 << "," << x+2 << "," << x+3;

	return 0;
}

Question 3

#include <iostream>

using namespace std;

int main ()
{
	char c;

	cout << "Enter a character: ";
	cin >> c;

	cout << "The ASCII code of " << c << " is " << int(c) << endl;

	return 0;
}

Question 4

#include <iostream>

using namespace std;

int main ()
{
	char c;

	cout << "Enter a lowercase character: ";
	cin >> c;

	cout << "The coresponding uppercase letter is " << (char)(c-32) << endl;

	return 0;
}

Question 5

#include <iostream>

using namespace std;

int main ()
{
	int height, feet, inch;

	cout << "Enter your height in inches: ";
	cin >> height;

	feet = height / 12;
	inch = height % 12;

	cout << "You are " << feet << " feet and " << inch << " inches tall" << endl;

	return 0;
}

Question 6

#include <iostream>

using namespace std;

int main()
{
	int amount, ten, five, one;

	cout << "How much do you need to pay? ";
	cin >> amount;

	ten = amount / 10;
	five = (amount % 10) / 5;
	one = (amount % 10) % 5;

	cout << "Number of $10 coins: " << ten << endl;
	cout << "Number of $5 coins: " << five << endl;
	cout << "Number of $1 coins: " << one << endl;

	return 0;
}

Question 7a
#include <iostream>

using namespace std;

int main()
{
	int m, month;

	cout << "Enter the month in number format: ";
	cin >> m;

	cout << "The month in text format: ";

	if (m == 1)
		cout << "January" << endl;
	else if (m == 2)
		cout << "February" << endl;
	else if (m == 3)
		cout << "March" << endl;
	else if (m == 4)
		cout << "April" << endl;
	else if (m == 5)
		cout << "May" << endl;
	else if (m == 6)
		cout << "June" << endl;
	else if (m == 7)
		cout << "July" << endl;
	else if (m == 8)
		cout << "August" << endl;
	else if (m == 9)
		cout << "September" << endl;
	else if (m == 10)
		cout << "October" << endl;
	else if (m == 11)
		cout << "November" << endl;
	else if (m == 12)
		cout << "December" << endl;
	else
		cout << "Invalid Input" << endl;

	return 0;
}

Question 7b
#include <iostream>

using namespace std;

int main()
{
	int m, month;

	cout << "Enter the month in number format: ";
	cin >> m;

	cout << "The month in text format: ";

	switch (m)
	{
		case 1:
			cout << "January" << endl;
			break;
		case 2:
			cout << "February" << endl;
			break;
		case 3:
			cout << "March" << endl;
			break;
		case 4:
			cout << "April" << endl;
			break;
		case 5:
			cout << "May" << endl;
			break;
		case 6:
			cout << "June" << endl;
			break;
		case 7:
			cout << "July" << endl;
			break;
		case 8:
			cout << "August" << endl;
			break;
		case 9:
			cout << "September" << endl;
			break;
		case 10:
			cout << "October" << endl;
			break;
		case 11:
			cout << "November" << endl;
			break;
		case 12:
			cout << "December" << endl;
			break;
		default:
			cout << "Invalid Input" << endl;
	}

	return 0;
}

Question 8

#include <iostream>

using namespace std;

int main ()
{
	int hour, wage;

	cout << "Number of working hours = ";
	cin >> hour;

	if (hour <= 40)
		wage = 60 * hour;
	else if (hour <=65)
		wage = 60 * 40 + 90 * (hour - 40);
	else
		wage = 60 * 40 + 90 * 25 + 120 * (hour - 65);

	cout << "The wage is equal to " << wage << endl;

	return 0;
}

Question 9
#include <iostream>

using namespace std;

int main ()
{
	int paper1, paper2, total;
	bool pass;			

	cout << "Paper 1 = ";
	cin >> paper1;
	cout << "Paper 2 = ";
	cin >> paper2;

	if ((paper1 == -1) && (paper2 == -1))
	{
		total = 0;
		pass = false;
	}	
	else if ((paper1 != -1) && (paper2 == -1))
	{
		total = paper1;
		if (paper1 >= 45)
			pass = true;
		else
			pass = false;
	}
	else if ((paper1 == -1) && (paper2 != -1))
	{
		total = paper2;
		if (paper2 >= 45)
			pass = true;
		else
			pass = false;
	}	
	else
	{
		total = paper1 + paper2;
		if ((total >= 40) && (paper1 >= 15) && (paper2 >= 15))
			pass = true;
		else
			pass = false;
	}

	cout << "Total Score = " << total << endl;
	if (pass == true)
		cout << "You pass the exam." << endl;
	else
		cout << "You fail the exam." << endl;

	return 0;
}