Program Crashing - please help!
Everytime I go to run this it crashes. I think it might have something to do with opening the data file, but the error check I wrote in isnt catching anything so I am at a bit of a loss as to what is wrong. :/
Code:
#include <stdio.h>
#include <stdlib.h>
/*Declaring all Variables and pointers*/
int FCOUNT, BCOUNT, ECOUNT, TOTTOTAL, TOT500, ERROR, NUMBER, HOURS;
char NAME, *CLASS, CODE, BUFFER, *REASON;
float CHARGE, GST, PST, TOTAL, AVGTOT;
FILE *error, *data;
int main()
{
/*Process Modules*/
initialize ();
DisplayHeadings ();
GetValidRecord ();
/*While Not End of File Process Records and Outputs*/
while (!feof(data)){
if (ERROR == 0){
ProcessRecord();
DisplayDetails ();
}
GetValidRecord ();
}
/*Process Summary Modules*/
PrepareSummary ();
DisplaySummary ();
system("PAUSE");
return 0;
}
int initialize ()
{
/*Initialize Counters*/
FCOUNT = 0;
BCOUNT = 0;
ECOUNT = 0;
TOTTOTAL = 0;
TOT500 = 0;
/*Open Error File*/
error = fopen("error.dat" , "w+");
/*Check for Error Creating Error File*/
if(error==NULL)
{
puts("Error Creating Error File!\n");
}
/*Open Customer Data File for Reading*/
data = fopen("cust.dat" , "r");
/*Check for Error Opening Customer Data File*/
if(data==NULL)
{
puts("Error Opening Customer Data File!\n");
}
}
int DisplayHeadings ()
{
/*Display Title*/
printf("Fly By Night Airlines - Customer Billing System (NJC)\n++================================================++\n");
/*Display Headers*/
printf ("\n ($) Base ($) GST ($) PST ($) Total\n");
printf ("Customer Name Class Type Charge Charge Charge Charge\n");
printf ("++++++++++++++++ +++++++++++++ ++++++++++ +++++++++ ++++++++++ +++++++++++++\n\n") ;
}
int GetValidRecord ()
{
/*Process ReadRecord Module*/
ReadRecord ();
/*Initialize ERROR to Zero*/
ERROR == 0;
/*While its not the end of file run the ValidateRecord Module*/
while (!feof(data)){
ValidateRecord ();
/*If ERROR is not 0, Process Writeto ErrorFile Module*/
if (ERROR != 0){
WriteToErrorFile();
}
}
}
int ProcessRecord ()
{
/*Process Modules to Determine the Total Charge*/
DetermineBaseCharge ();
CalculateTotals ();
UpdateTotals ();
}
int DisplayDetails ()
{
/*Display all Details to Screen*/
printf("%s", NAME);
printf("%s", CLASS);
printf("%f", CHARGE);
printf("%f", GST);
printf("%f", PST);
printf("%f", TOTAL);
}
int PrepareSummary ()
{
/*Determine the Average Total*/
if (FCOUNT + BCOUNT > 0)
{
AVGTOT = TOTTOTAL/(FCOUNT + BCOUNT + ECOUNT); }
else
{
AVGTOT = 0;
}
/*Close both files*/
fclose(data);
fclose(error);
}
int DisplaySummary ()
{
/*Display Summary of Counts and Averages*/
printf("First Class Count: %d\n", FCOUNT);
printf("Business Class Count: %d\n", BCOUNT);
printf("Economy Class Count: %d\n", ECOUNT);
printf("Average Total Charge: %d\n", AVGTOT);
printf("Number of Customers Billed over $500.00: %d\n", TOT500);
}
int ReadRecord ()
{
/*Read Record from Data File*/
fscanf(data, "%s\n", NAME);
fscanf(data, "%d\n", NUMBER);
fscanf(data, "%d\n", CODE);
fscanf(data, "%d\n", HOURS);
}
int ValidateRecord ()
{
/*Validate NUMBER, CODE and HOURS, Set ERROR*/
ERROR = 0;
if (NUMBER < 1138 || NUMBER > 5782)
{
ERROR =1; }
else if (CODE != 'F' & CODE != 'B' & CODE != 'E')
{
ERROR = 2; }
else if (HOURS <= 0)
{
ERROR = 3;
}
}
int WriteToErrorFile ()
{
/*Determine Reason for Error and print Error Message to File*/
if(ERROR = 1)
{
REASON = "ID Number Invalid";
}
else if(ERROR = 2)
{
REASON = "Class Code Invalid";
}
else if(ERROR = 3)
{
REASON = "Hours Invalid";
}
fprintf(error, "%s\n", NAME);
fprintf(error, "%d\n", NUMBER);
fprintf(error, "%d\n", CODE);
fprintf(error, "%d\n", HOURS);
fprintf(error, "%s\n", REASON);
}
int DetermineBaseCharge ()
{
/*Determine which Module to Process*/
if (CODE = 'F')
{
ProcessFirstClass ();
}
else if (CODE = 'B')
{
ProcessBusiness ();
}
else
{ProcessEconomy ();}
}
int CalculateTotals ()
{
/*Determine if there will be a discount*/
if (HOURS > 100)
{
CHARGE = CHARGE - CHARGE * 0.12;
}
/*Calculate GST, PST and Total Charge*/
GST = CHARGE * 0.07;
PST = CHARGE * 0.08;
TOTAL = CHARGE + GST +PST;
}
int UpdateTotals ()
{
/*Update Counters*/
if (CODE = 'F')
{
FCOUNT = FCOUNT + 1;
}
else if (CODE = 'B')
{
BCOUNT = BCOUNT + 1;
}
else
{ECOUNT = ECOUNT + 1;}
/*update TOTTOTAL*/
TOTTOTAL = TOTTOTAL + TOTAL;
/*update TOT500 Counter*/
if (TOTAL > 500)
{
TOT500 = TOT500 + 1;
}
}
int ProcessFirstClass ()
{
/*Assign Class with "First Class"*/
CLASS = "First class";
/*Determine what to charge according to HOURS*/
if (HOURS <= 10)
{
CHARGE = 70*HOURS;
}
else
{
CHARGE = 10*70+(HOURS-10)*65;
}
}
int ProcessBusiness ()
{
/*Assign CLASS with "Business"*/
CLASS = "Business";
/*Determine what to charge according to HOURS*/
if (HOURS <= 20)
{
CHARGE = 60*HOURS;
}
else
{
CHARGE = 20*60+(HOURS-20)*55;
}
}
int ProcessEconomy ()
{
/*Determine what to charge according to HOURS*/
CLASS = "Economy";
CHARGE = 45*HOURS;
}
