Please help me on this.

[narutochan]

i supposed to output 10 students last name and first and the their 10 grades and each of their average grades. My program doesn't output anything on the screen. What have i done wrong. please help me.

#include <iostream>
#include <fstream>
#include <cstdlib>

using namespace std;

void avgCalculation(ifstream& in_file, ofstream& out_file);

int main()
{

  ifstream fin;
  ofstream fout;

  fin.open("grades.dat");
  if (fin.fail())
    {
      cout<<"Input file opening failed"<<endl;
      exit(1);
    }

  fout.open("grades.dat");
  if (fout.fail())
    {
      cout<<"Output file opening failed"<<endl;
      exit(1);
    }

  avgCalculation(fin, fout);
  fin.close();
  fout.close();

 //  cout<<"End of program"<<endl;
  
return 0;
}

void avgCalculation(ifstream& fin, ofstream& fout)
{
  int i, sum, total[10];
  int const ten = 10;
  string first, last;
  double avg;

  while (fin>>last)
    {
      fin>>first;
      sum = 0;

      for (i = 0; i<10; i++)
        {
          fin>>total[i];
          sum = sum + total[i];
        }
      avg = static_cast<double>(sum)/ten;

      fout<<last;
      fout<<" ";
      fout<<first;
      fout<<" ";

      for (int l = 0; l<10; l++)
        {
          fout<<total[l];
          fout<<" ";
        }
      fout<<avg;
      fout<<endl;
    }
}

[detroit]

thats because you are outputing to the file only

line 33 is the only one that can print in the compilier window
but you have commented out.