CST116
Module 5: Lab 5

9a
10.5 Learn by Doing Exercises
p 247
10 pts #1
Submit: code & run

CODE:

	#include <iostream>
	using namespace std;
	const int NUM_GRADES = 5;
	const int NUM_STUS = 10;

	int main()
	{
		float score[NUM_STUS]{ 0.0 };
		char letter[NUM_GRADES]{ 'A', 'B', 'C', 'D', 'F'};
		int a = 0, b = 0, c = 0, d = 0, f = 0;
		float total = 0;
		float avg = 0;

		for (int i = 0; i < NUM_STUS; i++)
		{
			cout << "Enter student #" << i + 1 << "'s score : ";
			cin >> score[i];

			if (score[i] >= 92)
			{
				cout << letter[0] << ": " << score[i] << " % \n" << endl;
				a = a + 1;
			}
			else if (score[i] < 92 && score[i] >= 84)
			{
				cout << letter[1] << ": " << score[i] << "% \n" << endl;
				b = b + 1;
			}
			else if (score[i] < 84 && score[i] >= 75)
			{
				cout << letter[2] << ": " << score[i] << "% \n" << endl;
				c = c + 1;
			}
			else if (score[i] < 75 && score[i] >= 65)
			{
				cout << letter[3] << ": " << score[i] << "% \n" << endl;
				d = d + 1;
			}
			else
			{
				cout << letter[4] << ": " << score[i] << "% \n" << endl;
				f = f + 1;
			}
		}
	
		
		for (int i = 0; i < NUM_STUS; i++)
		{
			total += score[i];

		}
		avg = total / NUM_STUS;
		cout << "\n\t\t* CLASS STATS *\n" << endl;

		cout << "\t" << a << " students scored A's \n" << endl;
		cout << "\t" << b << " students scored B's \n" << endl;
		cout << "\t" << c << " students scored C's \n" << endl;
		cout << "\t" << d << " students scored D's \n" << endl;
		cout << "\t" << f << " students scored F's \n" << endl;
		cout << "\tThe class average score is " << avg << "% \n" << endl;


		return 0;

	}

RUN:

    Enter student #1's score : 97
    A: 97 %

    Enter student #2's score : 94
    A: 94 %

    Enter student #3's score : 22
    F: 22%

    Enter student #4's score : 52
    F: 52%

    Enter student #5's score : 63
    F: 63%

    Enter student #6's score : 84
    B: 84%

    Enter student #7's score : 75
    C: 75%

    Enter student #8's score : 69
    D: 69%

    Enter student #9's score : 65
    D: 65%

    Enter student #10's score : 98
    A: 98 %

                    * CLASS STATS *

            3 students scored A's

            1 students scored B's

            1 students scored C's

            2 students scored D's

            3 students scored F's

            The class average score is 71.9%


9b
10.6 Learn by Doing Exercises
p 253
Break into functions
10 pts #1
Submit: code & run

CODE:

	#include <iostream>
	using namespace std;
	const int NUM_GRADES = 5;
	const int NUM_STUS = 10;

	void GetScore(float score[10], char letter[5], int& a, int& b, int& c, int& d, int& f);
	void GetAvg(float score[10], char letter[5], float& avg, float& total);
	void Display(float score[10], char letter[5], float& avg, int& a, int& b, int& c, int& d, int& f);
	
		int main()
	{
		float score[NUM_STUS]{ 0.0 };
		char letter[NUM_GRADES]{ 'A', 'B', 'C', 'D', 'F' };
		int a = 0, b = 0, c = 0, d = 0, f = 0;
		float total = 0;
		float avg = 0;

		GetScore(score, letter, a, b, c, d, f);
		GetAvg(score, letter, avg, total);
		Display(score, letter, avg, a, b, c, d, f);

		return 0;
	}

	void GetScore(float score[10], char letter[5], int& a, int& b, int& c, int& d, int& f)
	{


		for (int i = 0; i < NUM_STUS; i++)
		{
			cout << "Enter student #" << i + 1 << "'s score : ";
			cin >> score[i];

			if (score[i] >= 92)
			{
				cout << letter[0] << ": " << score[i] << " % \n" << endl;
				a = a + 1;
			}
			else if (score[i] < 92 && score[i] >= 84)
			{
				cout << letter[1] << ": " << score[i] << "% \n" << endl;
				b = b + 1;
			}
			else if (score[i] < 84 && score[i] >= 75)
			{
				cout << letter[2] << ": " << score[i] << "% \n" << endl;
				c = c + 1;
			}
			else if (score[i] < 75 && score[i] >= 65)
			{
				cout << letter[3] << ": " << score[i] << "% \n" << endl;
				d = d + 1;
			}
			else
			{
				cout << letter[4] << ": " << score[i] << "% \n" << endl;
				f = f + 1;
			}
		}
	}

	void GetAvg(float score[10], char letter[5], float& avg, float& total)
	{
		for (int i = 0; i < 10; i++)
		{
			total += score[i];

		}
		avg = total / 10;
	}

	void Display(float score[10], char letter[5], float& avg, int& a, int& b, int& c, int& d, int& f)
	{
		cout << "\n\t\t* CLASS STATS *\n" << endl;

		cout << "\t" << a << " students scored A's \n" << endl;
		cout << "\t" << b << " students scored B's \n" << endl;
		cout << "\t" << c << " students scored C's \n" << endl;
		cout << "\t" << d << " students scored D's \n" << endl;
		cout << "\t" << f << " students scored F's \n" << endl;
		cout << "\tThe class average score is " << avg << "% \n" << endl;
	}


RUN:

	Enter student #1's score : 78
	C: 78%

	Enter student #2's score : 48
	F: 48%

	Enter student #3's score : 100
	A: 100 %

	Enter student #4's score : 65
	D: 65%

	Enter student #5's score : 98
	A: 98 %

	Enter student #6's score : 45
	F: 45%

	Enter student #7's score : 25
	F: 25%

	Enter student #8's score : 65
	D: 65%

	Enter student #9's score : 45
	F: 45%

	Enter student #10's score : 65
	D: 65%


					* CLASS STATS *

			2 students scored A's

			0 students scored B's

			1 students scored C's

			3 students scored D's

			4 students scored F's

			The class average score is 63.4%



10a
10.7 Learn by Doing Exercises
p 260
Break into at least 3 files as in 9b.
10 pts #2
Submit: code & runs

CODE:

(Header.h file)**********************************
	#pragma once

	#include "Functions.cpp"

	#include <iostream>
	using namespace std;
	const int NUM_GRADES = 5;
	const int NUM_STUS = 10;

	void GetScore(float score[10], char letter[5], int& a, int& b, int& c, int& d, int& f);
	void GetAvg(float score[10], char letter[5], float& avg, float& total);
	void Display(float score[10], char letter[5], float& avg, int& a, int& b, int& c, int& d, int& f);

(Functions.cpp file)**********************************
	#include "Header.h"

	void GetScore(float score[10], char letter[5], int& a, int& b, int& c, int& d, int& f)
	{


		for (int i = 0; i < NUM_STUS; i++)
		{
			cout << "Enter student #" << i + 1 << "'s score : ";
			cin >> score[i];

			if (score[i] >= 92)
			{
				cout << letter[0] << ": " << score[i] << " % \n" << endl;
				a = a + 1;
			}
			else if (score[i] < 92 && score[i] >= 84)
			{
				cout << letter[1] << ": " << score[i] << "% \n" << endl;
				b = b + 1;
			}
			else if (score[i] < 84 && score[i] >= 75)
			{
				cout << letter[2] << ": " << score[i] << "% \n" << endl;
				c = c + 1;
			}
			else if (score[i] < 75 && score[i] >= 65)
			{
				cout << letter[3] << ": " << score[i] << "% \n" << endl;
				d = d + 1;
			}
			else
			{
				cout << letter[4] << ": " << score[i] << "% \n" << endl;
				f = f + 1;
			}
		}
	}

	void GetAvg(float score[10], char letter[5], float& avg, float& total)
	{
		for (int i = 0; i < 10; i++)
		{
			total += score[i];

		}
		avg = total / 10;
	}

	void Display(float score[10], char letter[5], float& avg, int& a, int& b, int& c, int& d, int& f)
	{
		cout << "\n\t\t* CLASS STATS *\n" << endl;

		cout << "\t" << a << " students scored A's \n" << endl;
		cout << "\t" << b << " students scored B's \n" << endl;
		cout << "\t" << c << " students scored C's \n" << endl;
		cout << "\t" << d << " students scored D's \n" << endl;
		cout << "\t" << f << " students scored F's \n" << endl;
		cout << "\tThe class average score is " << avg << "% \n" << endl;
	}

(Main file)**********************************
	#include "Header.h"
	#include "Functions.cpp"


	int main()
	{
		float score[NUM_STUS]{ 0.0 };
		char letter[NUM_GRADES]{ 'A', 'B', 'C', 'D', 'F' };
		int a = 0, b = 0, c = 0, d = 0, f = 0;
		float total = 0;
		float avg = 0;

		GetScore(score, letter, a, b, c, d, f);
		GetAvg(score, letter, avg, total);
		Display(score, letter, avg, a, b, c, d, f);

		return 0;
	}


RUN:

	Enter student #1's score : 98
	A: 98 %

	Enter student #2's score : 95
	A: 95 %

	Enter student #3's score : 96
	A: 96 %

	Enter student #4's score : 78
	C: 78%

	Enter student #5's score : 85
	B: 85%

	Enter student #6's score : 84
	B: 84%

	Enter student #7's score : 83
	C: 83%

	Enter student #8's score : 100
	A: 100 %

	Enter student #9's score : 90
	B: 90%

	Enter student #10's score : 23
	F: 23%


					* CLASS STATS *

			4 students scored A's

			3 students scored B's

			2 students scored C's

			0 students scored D's

			1 students scored F's

			The class average score is 83.2%



10b
10.8 Exercises
p 273
Break into at least 3 files as in 9b.
10 pts #7 Write a full program to do this.
Submit: code & runs
Total: 40 pts

CODE:

(Header.h file)**********************************
	#pragma once

	#include "Functions.cpp"
	#include <iostream>
	#include <cstring>
	using namespace std;
	int compare();

(Functions.cpp file)**********************************
	#include "Header.h"

	int compare()
	{
		char string_1[] = "Frank";
		char string_2[] = "Franklyn";

		if (strncmp(string_1, string_2, 6) == 0)
			cout << "Same";
		else
			cout << "Different";

	}

(Main file)**********************************
	#include "Header.h"
	#include "Functions.cpp"

	int main()
	{
		compare();

		return 0;
	}

RUN:

	Different