Tyler Taormina
October 6, 2021

Module 2 Lab 2 

3a) Literals 
pg 62
4.1 Exercises 
------------------------

Correct and Label Literals 
-----------------------------------------------------------------------

1.  -12.34                Numeric 
.
2.  ‘Hello’               “Hello”  type string 

3. “F”                     type string

4. “1234”                  type string

5.  ‘1’                    type character 

6.  A                       ‘A’   type character 

7.  “Marcus’               “Marcus”    type string  

 
pg 65
4.3 Exercises 
---------------------

State what is wrong with each of the below 
-------------------------------------------------------------------------

a. int a, int b; 
	In the above code we could remove the second 'int' before the b. We would have...

	int a, b;

b. Int a = b; 
   Int b = 0; 
   
   In the above code we would need to change the order so that we are giving b a value before we initialize a. Corrected would look like...
   int b = 0;
   int a = b;

c. Int a = 0, b = 3.5;
Should be....
int a = 0;
float b = 3.5;

d. Char grade = “A”; 
Should be single quotes...
   char grade = 'A'; 

e. Char c = 1; 
Should be in single quotes...
   char c = '1';

f. Int a, b, c, d, e, f; 
should be lowercase 'i' in "int" and the names are nondescriptive
	

g. Char x = “This is a test.”; 
Should be a string...
 String x = "This is a test.";

 
 pg 122
6. 1 Exercises  
----------------------------------------------------------------------------

1. y = 5x + 1;
invalid because in c++ we cannot use a coefficient with a variable. We would need an asterisc to imply multiplication

2. X^2 + 2x + 1 = 0; 
invalid because of the coefficient 

3. x = 5 * a + 4; 
valid c++ statement

4. 0 = -15 * b;  
cannot have a constant on the left side of an equal sign, must be a variable. 




pg 82
3B) 
4.12 Exercises 
--------------------------------------------------------------------------------

1. 6% raise problem (this is the corrected pseudo code)

Display "enter old wage: "
read old_wage

raise_amnt = old_wage * .06
new_wage = old_wage + raise_amnt

display old_wage
display " + 6% = "
display new_wage


2. Final Grade problem (this is the corrected pseudo code)

Display "Enter Assignment Avergae: "
read assign_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

test_avg = (test1 * .15 + test2 * .15 + test3 * .15) / 3
class_score = assign_avg * .30 + test_avg * .45 + final_test * .25

Display "Final Score:"
display class_score

3C)
4.13 Programming exercise
pg 83-84
#2-3


2)  Just compile and run program. Will include image. 

3)
#include <iostream>
#include <iomanip>
using namespace std;

int main() {
	int year = 365;
	int age = 27;
	int age_in_days;
	age_in_days = year * age;

	cout << "You are " << age_in_days << " days old!";

	return 0;
}





4A)
5.4 Exercise 
pg 100
#1

#include <iostream>
#include <iomanip>

using namespace std;

int main()
{
	float temp;
	cin >> temp;

	cout << "Your temperature is: ";
	cout.width(6);
	cout.setf(ios::fixed); // decimal notation
	cout << setprecision(1) << temp << endl;

	return 0;


6.3 Exercises 
pg 123-124
#1-7

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;
	Error for incorrect opperands. Cannot use '%' with type double or float

7) 2 - 5 + 7 = a;
	Error saying expression must be a modifiable value



4B)
5.9 Debugging Exercise

int main() {
	float money = 123.45;
	float raise; 
	cout << "You have $ ";
	cout << money << endl;
	// breakpoint 1
	//put a breakpoint on the folowing line
	cout << "Enter percent raise: ";
	cin >> raise;

	money = money * raise + money;
	cout << "After your raise you have $";
	cout.setf(ios::fixed);
	cout << setprecision(2) << money << endl;

	return 0;
}


5.10 Programming Exercise
pg 114-115
#1
#include <iostream>

using namespace std;

int main() {
	float PRODUCTION_RATE = 10.00;
	float PRE_PRODUCTION_RATE = 10.00;
	float PRODUCERS_RATE = 10.00;

	double ProductionHours, PreProductionHours, ProducersHours, ProductionCost,
		PreProductionCost, ProducersCost, TotalCost; 
	cout << "Enter Production Hours: ";
	cin >> ProductionHours;
	
	cout << "\nEnter Pre-Production Hours: ";
	cin >> PreProductionHours;

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

	ProductionCost = ProductionHours * PRODUCTION_RATE;
	PreProductionCost = PreProductionHours * PRE_PRODUCTION_RATE;
	ProducersCost = ProducersHours * PRODUCERS_RATE;

	TotalCost = ProductionCost + PreProductionCost + ProducersCost;
	
	cout << "\n\t\tCar Dealership Bill\n";

	cout << "\n\nProduction Cost: ";
	cout << ProductionCost;

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

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

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

	return 0;
	
}