path: root/lab8.txt

//Tyler Taormina
//Lab 8 Text file
// CST 116

CST116

Module 8: Lab 8
================================================================================================
13a

11.7 Exercises

p 317

4 pts #5-6

Submit: Statements for 5, Judgements for 6
5.
    a.) .is_open()

    b.)

    int num_data = 0;

    //open file
    ifstream input ("lab8.txt");

    // check open file
    if (input.is_open())
    {
        // priming
        input >> lname[num_data] >> id[num_data] >> age[num_data];
    }
    else
        cout << "File not opened" << endl;
    return 0;

    c.)
    for the above ^^
        input.close();

6.
    a. false
    b. true
    c. false
    d. true
    e. true

================================================================================================
13b

11.9 Learn by Doing Exercises

p 323

10 pts #1: write a full program to call the function

Submit: code & run

CODE:

// Tyler Taormina
// CST 116
// Nov 2021
// Lab 8 Exercises


#include <iostream>
using namespace std;

void findMedian(float arr[], int);
float GetValues (float values[]);
#define MAX 20


int main ()
{
    int num_values;
    float values [MAX] = {0};
    num_values = GetValues(values);

    cout << "Here is our list..." << endl;
    for (int i = 0; i < num_values; i++)
        cout << values[i] << "  ";
    cout << endl;

    cout << "===================================================" << endl;

    findMedian(values, num_values);
    return 0;
}


float GetValues (float values[])
{
    int num_values = 0;
    char cont = 'n';

    do
    {
        cout << "Enter a number: ";
        cin >> values[num_values++];

        cout << "Enter another values (y/n)? ";
        cin >> cont;
    } while (toupper (cont) == 'Y' &&
            num_values < MAX);
    return num_values;
}


void findMedian(float arr[], int num_val)
{
    float x;

    if ((num_val % 2) == 0)
    {
        x = (arr[num_val/2] + arr[(num_val/2) - 1])/2;

        cout << "Even number Array. We will average the two middle most numbers to determine the median." << endl;
        cout << "The median is: " << x << endl;
    }
    else
    {
        cout << "Odd number Array. We will find the number in the middle of the list which determines the median." << endl;
        cout << "The median is: " << arr[num_val/2] << endl;
    }

}

RUN:

Enter a number: 1
Enter another values (y/n)? y
Enter a number: 2
Enter another values (y/n)? y
Enter a number: 3
Enter another values (y/n)? y
Enter a number: 4
Enter another values (y/n)? n
Here is our list...
1  2  3  4
===================================================
Even number Array. We will average the two middle most numbers to determine the median.
The median is: 2.5
till-t@Air:~/code/cst115-lab8-till-t|master⚡ ⇒  ./a.out
Enter a number: 1
Enter another values (y/n)? y
Enter a number: 2
Enter another values (y/n)? y
Enter a number: 3
Enter another values (y/n)? n
Here is our list...
1  2  3
===================================================
Odd number Array. We will find the number in the middle of the list which determines the median.
The median is: 2

================================================================================================
13c

11.13 Debugging Exercises

pp 333-336

10 pts

Submit: code & runs

CODE:
#include <iostream>
#include <fstream>	// For the files!!!!
#include <iomanip>	// For manipulators & formatting options
using std::cin;
using std::cout;
using std::endl;
using std::setw;
using std::ios;
using std::resetiosflags;
using std::setiosflags;

using std::ifstream;
using std::ofstream;

const int EMPLOYEES = 20;
const int MAX = 21;

int ReadData ( ifstream &inFile, ofstream &outFile, char name[][MAX], int age[] );
void WriteOutputFile ( ofstream &outFile, char name[][MAX], int age[],
                       int counter );
void PrintTotalsAndSummary ( ofstream &out, int totalRecords );

int main ( )
{
    char name[EMPLOYEES][MAX];
    int age[EMPLOYEES];
    int record_counter ( 0 );

    ifstream inFile;

    // Notice how this automatically opens the file
    ofstream outFile ( "debug_report.txt" );

    inFile.open ( "debug.txt");

    if ( inFile.is_open ( ) )
    {
        record_counter = ReadData ( inFile, outFile, name, age );
        inFile.close ( );

        if ( outFile.is_open ( ) )
        {
            WriteOutputFile ( outFile, name, age, record_counter );
            PrintTotalsAndSummary ( outFile, record_counter );
            outFile.close ( );
        }
        else
        {
            cout << "Trouble Opening File: outFile";
            cout << "\n\n\t\t ** About to EXIT NOW! ** ";
        }
    }
    else
    {
        cout << "Trouble Opening File: inFile";
        cout << "\n\n\t\t ** About to EXIT NOW! ** ";
    }
    return 0;
}
int ReadData ( ifstream & inFile, ofstream & outFile, char name[][MAX], int age[] )
{
    int counter = 0;
    inFile >> name[counter] >> age[counter]; // Priming Read

    while ( !inFile.eof ( ) )
    {
        cout << setiosflags ( ios::left ) << setw ( 25 )
             << name[counter] << resetiosflags ( ios::left )
             << setw ( 4 ) << age[counter] << endl;
        counter++;
        inFile >> name[counter] >> age[counter];
    }

    return counter;
}
void WriteOutputFile ( ofstream &outFile, char name[][MAX], int age[], int counter )
{
    outFile << "   Here is the Output File" << endl;
    for ( int r = 0; r < counter; r++ )
    {
        outFile << setiosflags ( ios::left ) << setw ( 25 )
                << name[r] << setw ( 4 )
                << resetiosflags ( ios::left ) << age[r]
                << endl;
   }
}
void PrintTotalsAndSummary ( ofstream &outFile, int totalRecords )
{
    // To screen
    cout << "\n\n\t** Total Records: " << totalRecords << " **\n"
         << "\t\t The End \n";

    // To file
    outFile << "\n\n\t** Total Records: " << totalRecords << " **\n"
         << "\t\t The End \n";
}

RUN:  ***output file is included in debug exercise folder in github***

tyler                      27
taury                      26
ollie                       1
ryan                       25
elayna                     15
mom                        40


	** Total Records: 6 **
		 The End


================================================================================================
11.14 Programming Exercises

pp. 336-337

10 pts #1

Submit: code & run


CODE:


RUN: