Tyler Taormina
Lab 4 Text File
CST CST116
October 20, 2021

7a
6.8 Exercises
pp 132-133
5 pts #1-9
Submit: value of “a” after the expression is executed
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1. a = sqrt( 9.0);     a = 3
2. a = sqrt (-9.0);    a = nan
3. a = pow( 2.0, 5 );   a = 32
4. a = pow ( 2.0, -2 );  a = 0.25
5. a = ceil( 5.1 );    a = 6
6. a = ceil( 5.9 );    a = 6
7. a = floor( 5.1 );    a = 5
8. a = floor( 5.9 );     a = 5
9. a = sqrt( pow( abs( -2 ), 4 ) );    a = 4


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9.3 Exercises
p 207
10 pts #1
Submit: code & run
Total: 15 pts


#include <iostream>
#include <cmath> // needed for square roots
using namespace std;

int avg_score (float& num1, float& num2, float& num3);

int main()
{

    float value1, value2, value3, average = 0.0;

    cout << "Enter 3 values that you want averaged." << endl;
    cout << "Enter value 1: " << endl;
    cin >> value1;
    cout << "Enter value 2: " << endl;
    cin >> value2;
    cout << "Enter value 3: " << endl;
    cin >> value3;

    average = avg_score(value1, value2, value3);
    cout << "Your average score is: " << average << endl;

    return 0;
}

int avg_score (float& num1, float& num2, float& num3)
{
    int avg = 0;
    avg = ( num1 + num2 + num3 ) / 3;
    return avg;
}

RUN:
C:\Users\Till\CLionProjects\gitDemo\cmake-build-debug\gitDemo.exe
Enter 3 values that you want averaged.
Enter value 1:
20
Enter value 2:
19
Enter value 3:
21
Your average score is: 20

Process finished with exit code 0

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7b
9.4 Learn by Doing Exercises
p 214
10 pts #1
Submit: code & runs
CODE:

#include <iostream>
using namespace std;

void GetInput (float& salary, int& years_service);
void CalcRaise (float& salary, int years_service);
int CalcBonus (int years_service);
void PrintCalc (int years_service, float salary, int bonus);

int main()
{
    int years_service = 0, bonus = 0;
    float salary = 0.0;

    GetInput(salary, years_service);
    CalcRaise(salary, years_service);
    bonus = CalcBonus(years_service);
    PrintCalc(years_service, salary, bonus);

    return 0;
}


void GetInput (float& salary, int& years_service)
{
    cout << "Enter salary: ";
    cin >> salary;
    cout << "Enter years_service: ";
    cin >> years_service;
}

void CalcRaise (float& salary, int years_service)
{
    if (years_service > 10)
        salary += (salary * .10);
    else if (years_service >= 5)
        salary += (salary * .05);
    else
        salary += (salary * .02);
}


int CalcBonus (int years_service)
{
    int bonus = 0;
    int bonus_years = 0;
    bonus_years = years_service / 2;
    bonus = bonus_years * 500;
    return bonus;
}

void PrintCalc (int years_service, float salary, int bonus)
{
    cout << "Employee years of service is " << years_service << endl;
    cout << "Your current salary is $" << salary << endl;
    cout << "The bonus you will receive is $" << bonus << endl;
}



RUN:
C:\Users\Till\CLionProjects\gitDemo\cmake-build-debug\gitDemo.exe
Enter salary:20000
 Enter years_service:10
 Employee years of service is 10
Your current salary is $21000
The bonus you will receive is $2500

Process finished with exit code 0
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7c
9.5 Learn by Doing Exercises
p 216
10 pts #2
Submit: code & run

CODE:
#include <iostream>
#include <iomanip>
using namespace std;

void getNum (int&, int&, int&);
void printTime (int&, int&, int&, int form = 1);

int main()
{
    int hour = 0, min = 0, sec = 0;
    int format;
    getNum(hour, min, sec);
    printTime(hour, min, sec, format);

    return 0;
}

void getNum(int& hour, int& min, int& seconds)
{
    cout << "Enter hour for the current time: ";
    cin >> hour;
    cout << "Enter minute of the current time: ";
    cin >> min;
    cout << "Enter seconds for the current time: ";
    cin >> seconds;
}

void printTime(int& hour, int& min, int& seconds, int form)
{
    int time = 0;
    cout << "Please enter your choice of clock formatting." << endl;
    cout << "Enter 1 for standard formatting." << endl;
    cout << "Enter 2 for 24 hour formatting." << endl;
    cout << "Enter 3 for military formatting." << endl;
    cin >> form;

    switch (form)
    {
        // standard time
        case 1:
            cout << "Enter 1 for AM or 2 for PM: ";
            cin >> time;
            cout << "Standard time: " << endl;
            switch (time)
            {
                case 1:
                    cout << hour << ":" << setw(2) << setfill('0') << min << ":";
                    cout << setw(2) << setfill('0') << seconds << " AM";
                    break;
                case 2:
                    cout << hour << ":" << setw(2) << setfill('0') << min << ":";
                    cout << setw(2) << setfill('0') << seconds << " PM";
                    break;
                default:
                    cout << "INVALID ENTRY. TRY AGAIN." << endl;
                    main();

            }
            break;

        // 24 hour formatting
        case 2:
            cout << "Enter 1 for AM or 2 for PM: ";
            cin >> time;
            cout << "24-hour Formatting: " << endl;
            switch (time)
            {
                case 1:
                    cout << hour << ":" << setw(2) << setfill('0') << min << ":";
                    cout << setw(2) << setfill('0') << seconds;
                    break;
                case 2:
                    hour += 12;
                    cout << hour << ":" << setw(2) << setfill('0') << min << ":";
                    cout << setw(2) << setfill('0') << seconds;
                    break;
                default:
                    cout << "INVALID ENTRY. TRY AGAIN." << endl;
                    main();

            }
            break;


        // military time
        case 3:
            cout << "Enter 1 for AM or 2 for PM: ";
            cin >> time;
            cout << "Military Formatting: " << endl;
            switch (time)
            {
                case 1:
                    cout << hour << setw(2) << setfill('0') << min;
                    cout << setw(2) << setfill('0') << seconds;
                    break;
                case 2:
                    hour += 12;
                    cout << hour << setw(2) << setfill('0') << min;
                    cout << setw(2) << setfill('0') << seconds;
                    break;
                default:
                    cout << "INVALID ENTRY. TRY AGAIN." << endl;
                    main();

            }
            break;

        default:
            cout << "INVALID ENTRY. TRY AGAIN." << endl;
            main ();

            break;
    }
}


RUN:
C:\Users\Till\CLionProjects\gitDemo\cmake-build-debug\gitDemo.exe
Enter hour for the current time:2
 Enter minute of the current time:2
 Enter seconds for the current time:2
 Please enter your
 choice of clock formatting.
Enter 1 for standard formatting.
Enter 2 for 24 hour formatting.
Enter 3 for military formatting.
2
Enter 1 for AM or 2 for PM:2
 24-hour Formatting:
14:02:02
Process finished with exit code 0



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8a
9.13 Debugging Exercises
pp 226-229
10 pts #1
Submit: code & runs

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

const int DAYS_PER_YEAR = 365;

int GetAge ( );
int CalcDays ( int age );
void PrintResults ( int& age, int days );

int main ( )
{
    int age = 0;
    int days = 0;

    // Breakpoint 1
    // Put breakpoint on the following line
    age = GetAge ( );
    days = CalcDays ( age );

    // Breakpoint 2
    // Put breakpoint on the following line
    PrintResults ( age, days );

    return 0;
}
int GetAge ( )
{
    int age;

    cout << "Please enter your age: ";
    cin >> age;

    return age;
}
int CalcDays ( int years )
{
    int days;

    days = years * DAYS_PER_YEAR;

    return days;
}
void PrintResults ( int& age, int days )
{
    cout << age << "! Boy are you old!\n";
    cout << "Did you know that you are at least " << days << " days old?\n\n";
}



RUN:
C:\Users\Till\CLionProjects\gitDemo\cmake-build-debug\gitDemo.exe
Please enter your age:21
 21! Boy are you old!
Did you know that you are at least 7665 days old?


Process finished with exit code 0



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8b
9.14 Programming Exercises
pp 229
10 pts #1
Submit: code & run

CODE:
#include <iostream>
using namespace std;

void draw (int w, int h)
{
    int i;
    cout << char(218);
    for (int i = 0; i <= (w); i++)
        cout << char(196);
    cout << char(191) << endl;
    for (int i = 0; i <= (h); i++) {
        cout << char(179);
        for (int i = 0; i <= (w); i++)
            cout << " ";
        cout << char(179) << endl;
    }
    cout << char(192);
    for (int i = 0; i <= (w); i++)
        cout << char(196);
    cout << char(217);
}

int main()
{
    int h = 0, w = 0;
    cout << "Enter a height for your rectangle: ";
    cin >> h;
    cout << "Enter a width for your rectangle: ";
    cin >> w;
    cout << "Rectangle: " << endl;

    draw(w,h);

    return 0;
}

RUN:
C:\Users\Till\CLionProjects\gitDemo\cmake-build-debug\gitDemo.exe
Enter a height for your rectangle:2
 Enter a width for your rectangle:10
 Rectangle:
┌─────────┐
│         │
│         │
└─────────┘
Process finished with exit code 0



Total: 55 pts