CST116  today
Module 2: Lab 2

3a
4.1 Exercises
pp 63-64
3.5 pts #1-7
Submit: labelled and corrected literals
1. -12.34			Numeric
2. ‘Hello’			Illegal
3. “F”				String
4. “1234”			String
5. ‘1’				Character
6. A				Illegal
7. “Marcus’			Illegal

4.3 Exercises
p 72
3.5 pts #3
Submit: corrected statements
a. int a, b;
b. int b = 0;
	int a = b; 
c. int a = 0
	float b = 3.5;		
d. char grade = 'A';
e. char c = '1';
f. int a, b, c, d, e, f;
g. string x = “This is a test.”;

6.1 Exercises
p 122
4 pts #5-4
Submit: corrected statements
11 pts total
1. Y = 5x + 1;				Invalid because "5x" needs *
2. x^2 + 2x + 1 = 0;		Invalid because "2x" and because the left side of the equal sign should just be a variable location and you cannot use exponents 
3. X = 5 * a + 4;			Valid
4. 0 = -15 * b;				Invalid because "0" (left side of equal sign must be a variable)

3b
4.12 Exercises
pp 82-83
20 pts 1-2
Submit: corrected pseudocode
20 pts total
1.
	Display "Enter old wage: "
	Read Old_wage

	Raise = Old_wage * .06
	New_wage = Old_wage + Raise

	Display Old_wage
	Display "+ 6% ="
	Display New_Wage

2. 
	Display "Enter Assignment average: "
	Read Assignment_avg

	Display"Enter Test 1: "
	Read Test1

	Display"Enter Test 2: "
	Read Test2

	Display"Enter Test 3: "
	Read Test3

	Display "Enter Final: "
	Read Final

	Test_avg = Test1 * .15 + Test2 * .15 + Test3 *.15 / 3
	Class_Score = Assign_avg * .30 + Test_avg * .45 + Final * .25

	Display "Final score: "
	Display Class_score

3c 
4.13 Programming Exercises 
pp 83-­84 
20 pts 2-­3 
Submit: code & run 
20 pts total
2. 
	#include <iostream>
	using std::cout;

	int main()
	{
		char ascii = 67;

		cout << ascii << '\n';
		ascii = 43;
		cout << ascii << '\n';
		cout << ascii << '\n';

		return 0;
	}

RUN:
C
+
+

3. 
PSEUDOCODE:
	Display "Enter age: "
	Read age

	new_age = age * days
	Display new_age

CODE:
	#include <iostream>
	using namespace std;

	int main()
	{
		int age = 0;
		int new_age = 0;
		const int days = 365;

		cout << "Enter age: ";
		cin >> age;

		new_age = age * days;
		cout << "Your age in days is: " << new_age << endl;

		return 0;
	}

RUN:
Enter age: 19
Your age in days is: 6935

4a 
p 100
5.4 Learn by Doing Exercises 
10 pts #1 
Submit: code & run 
1. 
	#include <iostream>
	#include <iomanip>
	using namespace std;

	int main()
	{
		float temp = 0;

		cout << "Enter temperature: ";
		cin >> temp;

		cout.width(6);
		cout.setf(ios::fixed);
		cout << setprecision(1) << temp << endl;

		return 0;
	}

RUN:
Enter temperature: 98.5
      98.5

pp 123­-124 
6.3 Exercises 
4 pts #1-­7 
Submit: corrected equations and values of the variable “a”
1. a = 5 + 10 * 2;			a = 25
2. a = (5 + 10) * 2;		a = 30
3. a = 5;					
	a = a + (5 + 10) * 2;	a = 35
4. a = 10 % 5;				a = 0
5. a = 10 % 3;				a = 1
6. a = 5.2 % 2.3;			Modulus cannot be used for floats
7. 2 - 5 + 7 = a;			The left side of the equal sign should be the variable


4b
pp 112-114
5.9 Debugging Exercise
10 pts
Submit: corrected code & run

	#include <iostream>
	#include <iomanip>
	using std::cout;
	using std::cin;
	using std::endl;

	int main()
	{
		float money = 123.45F;
		float raise_amount = 0;
		float raise;
		float new_money = 0;

		cout << "You have $";
		cout << money << endl;

		//Breakpoint 1
		//Put a breakpoint on the following line
		cout << "Enter percent raise: ";
		cin >> raise_amount;

		raise = money * raise_amount;
		new_money = money + raise;

		cout << "After your raise you have $";
		cout << new_money << endl;

		return 0;
	}

RUN:
You have $123.45
Enter percent raise: .1
After your raise you have $135.795

pp 114-115
5.10 Programming Exercise
10 pts #1
Submit: corrected code & run
20 pts total
	#include <iostream>
	using std::cout;
	using std::cin;
	using std::endl;

	int main( )
	{
		double ProductionHours, ProducersHours, ProducersCost, TotalCost;
		double ProductionRate = 0;
		double ProductionCost = 0;

		cout << "Enter Production Hours: ";
		cin >> ProductionHours;
		cout << "\nEnter Production Rate: ";
		cin >> ProductionRate;

		cout << "\nEnter Producers Hours: \n";
		cin >>  ProducersHours;

		ProductionCost = ProductionHours * ProductionRate;
		ProducersCost = ProducersHours * ProductionRate;

		TotalCost = ProductionCost + ProducersCost;

		cout << "\n\t\tCar Dealership Bill " ;
		cout << "\n\nProduction Cost: ";
		cout << ProductionCost ;

		cout << "\n\nPre-Production Cost: ";
		cout << ProductionCost;

		cout << "\n\nProducers Cost: ";
		cout << ProducersCost;

		cout << "\n\nWeekly Total Cost: ";
		cout << TotalCost << endl;

		return 0;
	}

RUN:
Enter Production Hours: 5

Enter Production Rate: 89

Enter Producers Hours:
9

                Car Dealership Bill

Production Cost: 445

Pre-Production Cost: 445

Producers Cost: 801

Weekly Total Cost: 1246