DaniWeb IT Discussion Community - Error Message Concerning Reading File From A Drive

I AM RUNNING A PROGRAM THAT DEALS WITH TEXT FILES IN NOTEPAD. I TYPE IN A FAKE SSN AND THE PROGRAM IS TO READ A LIST OF FILES FROM student course. I AM GETTING AN ERROR MESSAGE TELLING ME THAT PROGRAM CAN'T READ FILE. TWO EX OF SSN'S ARE 201235678 AND 123411234. THE FOLLOWING IS SOME OF THE PROGRAM

#include <iostream.h>

#include <iomanip.h>

#include <math.h>

#include <stdlib.h>

#include <fstream.h>

#include <ctype.h>

#include <conio.h>

#include <string.h>





  struct student

  {

        long stud;

        char lname[12];

        char fname[8];

        char mi[1];

  };



 struct Books

        {

        char courseID[7];

        char title[50];

        double price;

        };



 struct title

        {

          char courseid[7];

          char  booktitle[50];

        };



 struct clas

        {

         long studid;

         char subjid[7];

         };



 int main () //Beginning of main

        {

          char chartest;



                                                //reading file

         ifstream infile("a:studentcourse.txt");



        clas *bol[200];

        title *pic[200];

        student *boc[200];

        Books *rec[200];

        long  ID;

        int count=0;

        int couter =0;

        int cou = 0;

        char *hold[7];



                                  //SET UP OUT STREAM FOR CURRENT OUTPUT

        cout     << setprecision (2)

                                << setiosflags (ios::fixed)

                                << setiosflags (ios::showpoint);









         cout<<"\n\n\nENTER STUDENT ID (social security number)\n";

         cin >> ID;



                                                                //reading file



         while (!infile.eof())

                {

                boc[count] = new student();

                infile>>boc[count]->stud>>boc[count]->lname>>boc[count]->fname

                                >>boc[count]->mi;

                 count++;

                }



                  for(int i = 0; i < count ; i++)

                        {

                          long temp;

                        

                        if(temp == ID)

                         {

                          cout<<boc[i]->lname<<" "<<boc[i]->fname<<" "<<boc[i]->mi;

                         }

                  }



 cout<<"\n\n"<<setw(15)<<"Enter Y to continue or N to Cancel.\n\n\n";

 cin>>chartest;

         if(chartest == 'n' || chartest == 'N')

                 {

                        getche();

                        clrscr();

                         return 0;

                 }//endif



 cout<<"\n\n\nStudent ID No:"<<setw(25)<<ID;"\n\n";



 cout<<"\n\nYou are enrolled in the following classes:\n";



                                            // reading file

         ifstream infile_fil ("a:studentcourse.txt");



         if (infile_fil.fail())

          {

                cout<<"\nThere is a problem locating the input file a:studentcourse.txt.\n";

                cout<<"\nCheck that input file is on the correct drive\n";

                cout<<"\nand that the name of the file is spelled correctly.";

                exit (1) ;



                }

I WOULD APPRECIATE IF I COULD GET A RESPONSE AS SOON AS POSSIBLE