pass values inputted using getline() to array

[joestevens232]

I need help with my program. Im trying to take input from a file and store the input into different arrays in my structure. The first pary where I get the students name worked fine but now when i try and assing the next 7 numbers into my quizzes array Im gettin problems. It's including the whitespace and therefore not accompilshing what I want to be done. Heres my file im reading in from:

Smith 9 9.33 8 10 5.5 8 10 20 47.5 47 45 47.5 48 83 87 100 98 
96 100 98 92 88 96 92 86 92 94 100 96 
 

and heres my main file:

#include <iostream>
#include <string>
#include <vector>
#include <fstream>
using namespace std;
using std::ifstream;
using std::ofstream;
//Structure for holding all the grades                                        
struct Grades
{
    string student;
    float quizzes[7];
    float projects[6];
    float exams[2];
    float labs[14];
};
 
int main()
{
    Grades a, b, c, d, e;
    string line;
    ifstream myfile("grades.txt");
    if (myfile.is_open())
    {
        if (! myfile.eof() )
        {
            getline (myfile,line);
            int i = 0;
            while (isalpha(line[i]))
            {
                a.student += line[i];
                i++;
            }
            for (int h = 0; h < 7; h++)
            {
                a.quizzes[h] += line[i+1];
                i++;
            }
        }
        myfile.close();
    }
    else cout << "Unable to open file";
 
}
 

I need to assign the grades to each different array in my struct....I got the string to hold the students name now I need to assign the next 7 numbers to quizzes then the next 6 to Projects then 2 to exams and so on....Any help with how I can accompish this will be greatly appreciated. **I tried cout'ing the a.quizzes later in the file and thats how I know it's not working right.

[mac11]

You have several issues going on.

            getline (myfile,line);

First your telling getline to give you the whole line so line (your string) is just the text, its not smart enough to know what the text means. You have to break it apart into individual pieces before you can hand the pieces out. Look at using string::find() and/or string::substr().

            while (isalpha(line[i]))
            {
                a.student += line[i];
                i++;
            }

When you do this your adding the name to a.student which is fine because a.student is a string just like line is, but...

            for (int h = 0; h < 7; h++)
            {
                a.quizzes[h] += line[i+1];
                i++;
            }

Here your trying to add text onto a float, a.quizzes can only store floats - remember line only contains text (text that looks like numbers is still text) you have to convert the text into numbers - atof() is good at doing this