Question

1)     The provided sched.cpp file is missing a few lines to read in some of the data. The comments in the code describe how there is yet another stream library that works like iostream and fstream, but for processing string’s. Fill in the necessary statements and uncomment the indicated cout statements to get the output below for the attached “sched.txt” file:

CS100

Section 1 has 17 open seats

It is held on MW from 8:00A to 9:15A in SC-S146

It is taught by C. Smith

Section 2 has 11 open seats

It is held on MW from 11:00A to 12:15P in VBT-0222

It is taught by I. Yellapragada

sched.cpp
/* Lab 4 part 1. Files and stringstreams */
#include <iostream>
#include <fstream>
#include <sstream> // like fstream, but for string's
#include <iomanip>
#include <cstdlib>
#include <string>

using namespace std;

int main()
{
    string dept, crsInfo, secInfo, days, room, lname, finit;
    unsigned int crsNo, secNo, cap, avail, start_hr, start_min, end_hr, end_min;
    char skip, start_ampm, end_ampm;
    ifstream sched("sched.txt");
    istringstream secStrm;

    // Read in Course department, number
    sched >> dept >> crsNo;
    // Note that >> does not store the space between
    // dept and crsNo
    cout << dept << crsNo << endl;
    getline(sched, crsInfo);
    sched.ignore(1);

    // Process each section
    while (sched >> secNo) {
        // Reads rest of line from file into string
        getline(sched, secInfo);
        // Set the stringstream to take its data
        // from this string
        secStrm.clear(); // first clear what's in the stream
        secStrm.str(secInfo); // now set the data to process
        // Now you can use the usual >> operator
        secStrm >> cap >> skip >> avail;
        // ADD CODE HERE
        // use the skip char variable to read in extra char's
        // or use ignore()

        cout << "Section " << secNo
             << " has " << avail << " open seats" << endl;
        // Uncomment the following to get the rest of the output
        // after you have extracted these values
        /*
        cout << "It is held on " << days
             << " from " << start_hr << ':'
             << setw(2) << setfill('0')
             << start_min << start_ampm
             << " to " << end_hr << ':'
             << setw(2) << setfill('0')
             << end_min << end_ampm
             << " in " << room << endl
             << "It is taught by " << finit << ' ' << lname << endl;
        */
        // Get to start of next line in file
        sched.ignore(1);
    }
    sched.close();
    // system("pause");
        return 0;
}

sched.txt

CS 100 - Programming for Everyone (3 Units) 
01   45/17  MW  SC-S146    08:00A-09:15A Smith C.
02   45/11  MW  VBT-0222   11:00A-12:15P Yellapragada I.

Answer 1

If you have any doubts, please give me comment...

/* Lab 4 part 1. Files and stringstreams */

#include <iostream>

#include <fstream>

#include <sstream> // like fstream, but for string's

#include <iomanip>

#include <cstdlib>

#include <string>

using namespace std;

int main()

{

    string dept, crsInfo, secInfo, days, room, lname, finit, temp;

    unsigned int crsNo, secNo, cap, avail, start_hr, start_min, end_hr, end_min;

    char skip, start_ampm, end_ampm;

    ifstream sched("sched.txt");

    istringstream secStrm;

    // Read in Course department, number

    sched >> dept >> crsNo;

    // Note that >> does not store the space between

    // dept and crsNo

    cout << dept << crsNo << endl;

    getline(sched, crsInfo);

    sched.ignore(1);

    // Process each section

    while (sched >> secNo) {

        // Reads rest of line from file into string

        getline(sched, secInfo);

        // Set the stringstream to take its data

        // from this string

        secStrm.clear(); // first clear what's in the stream

        secStrm.str(secInfo); // now set the data to process

        // Now you can use the usual >> operator

        secStrm >> cap >> skip >> avail>>days>>room>>temp>>lname>>finit;

        start_hr = stoi(temp.substr(0, 2));

        start_min = stoi(temp.substr(3, 2));

        start_ampm = temp[5];

        end_hr = stoi(temp.substr(7, 2));

        end_min = stoi(temp.substr(10, 2));

        end_ampm = temp[12];

        // ADD CODE HERE

        // use the skip char variable to read in extra char's

        // or use ignore()

        cout << "Section " << secNo

             << " has " << avail << " open seats" << endl;

        // Uncomment the following to get the rest of the output

        // after you have extracted these values

        cout << "It is held on " << days

             << " from " << start_hr << ':'

             << setw(2) << setfill('0')

             << start_min << start_ampm

             << " to " << end_hr << ':'

             << setw(2) << setfill('0')

             << end_min << end_ampm

             << " in " << room << endl

             << "It is taught by " << finit << ' ' << lname << endl;

        // Get to start of next line in file

        sched.ignore(1);

    }

    sched.close();

    // system("pause");

        return 0;

}