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Creating a running total from input file

dbarclay100 (19)
I'm trying to create a running total that can calculate the weighted average of the numbers in each course. It will add up all the test than divide by the total number of test. The problem I have is that the first course prints out with the average but the other don't. Also, how would I make the grades weighted to get the final average?

Test 1 = 10%
Test 2 = 15%
Test 3 = 20%
Test 4 = 25%
Test 5 = 30%

Input:
Nancy Peterson
22
510 Tumble Dr., San Gabriel, TX 57981
3
(666) 759 - 2249
492-35-5984
CS1428
80.9
90.2
98.5
89.8
97.7
CS2308
50.9
55.2
60.5
65.8
45.7
CS2308
60.9
55.2
60.5
65.8
60.7
Jacob Dillion
19
951 Moore St., San Marcos, Tx 77688
4
(555) 759 - 2249
555-35-5984
CS1428
80.9
90.2
98.5
89.8
97.7
CS2308
50.9
55.2
60.5
65.8
45.7
CS2308
60.9
55.2
60.5
65.8
60.7
John Doe
19
951 Moore St., San Marcos, Tx 77688
4
(555) 759 - 2249
555-35-5984
CS1428
80.9
90.2
98.5
89.8
97.7
CS2308
50.9
55.2
60.5
65.8
45.7
CS2308
60.9
55.2
60.5
65.8
60.7

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  #include <iostream>

#include <fstream>

#include <string>

#include<iomanip>

using namespace std;



int main()

{

    string name, social, address, telephone, course, header;

    int n, age, years;

    double test;

    double total;

    double average;

    const int NUMBER_OF_COURSES = 3;

    const int NUMBER_OF_SCORES = 5;

    int min_students = 1,

        max_students = 100;

    //number of students

    cout << "Enter how many students do you want to see:" << endl;

    cin >> n;

    // Validate the input while loop

    while (n < min_students || n > max_students )

    {

        cout << "You should have at least "<< min_students << " student"
        << " and more than " << max_students << " students" << endl;

        //get number of students again

        cout << "Enter how many students do you want to see:";

        cin >> n;

    }

    //Open Input and Output file

    ifstream fin;

    fin.open("Input.txt");

    if (!fin) {

        cout << "could not open file" << endl;
fin.ignore();
        return -1;

    }

    ofstream fout;


    fout.open("Output.txt");

    if (!fout) {

        cout << "could not open file" << endl;

        return -1;

    }


    // Ask for some info

    for (int i = 0; i < n; ++i) {

        getline(fin,name);

        fin >> age;

        fin.ignore();

        getline(fin,address);

        fin >> years;

        fin.ignore();

        getline(fin,telephone);

        getline(fin,social);

        fout << name << endl;
        fout << age << endl;
        fout << address << endl;
        fout << years << endl;
        fout << telephone << endl;
        fout << social << endl;


        for (int j = 0; j < NUMBER_OF_COURSES; ++j) {
            fin.ignore();

            getline(fin,course);

            fout << course << endl;


            for (int k = 0; k < NUMBER_OF_SCORES; k++) {

                fin >> test;

                total = total + test;

                fin.ignore();

                 fout << test << endl;

            }

            average = total / NUMBER_OF_SCORES;

            fout << average << endl;

        }

    }

    cout << "Data written to output file." << endl;

    fin.close();
    fout.close();


    return 0;



        }
Last edited on
Duthomhas (13214)
Is the previous answer not good enough for you?
http://www.cplusplus.com/forum/beginner/250621/
dbarclay100 (19)
@Duthomhas

I not sure how to apply the weight to calculate the average. I have the average without the different weights right now thats why I asked.
Duthomhas (13214)
I will respond in your other thread.
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