Read data from file and store into an array of structs

Question

So I need help creating a program that will open a file and read the data from the file into an array of structs and then calculate a variety of things like highest, lowest, ave

Answer 1

This should read all your data into the array, you'll want an incrementor to

ifstream inStream; inStream.open("scores.txt");

 while (!inStream.eof())
 {

       inStream >> StudentData arr[SIZE];

 };
 inStream.close();

Answer 2

My suggestion:

1. Add an operator function to read one StudentData object from a stream.
2. Add a while loop in main. In each iteration of the loop, read a StudentData

std::istream& operator>>(std::istream& in, StudentData& st)
{
    return (in >> st.studentID
               >> st.first_name
               >> st.last_name
               >> st.exam1
               >> st.exam2
               >> st.exam3);
}

and in main:

openInputFile(inFile, inFileName);

size_t numItems = 0;
while ( inFile >> arr[numItems] )
   ++numItems;

At the end of that, you would have successfully read numItems items into arr.