Thread: Struct Trouble

Hello all,
I am currently working on an assignment in my C language class that has me creating a struct file, writing it to a binary file, then reading the file to import the data into a table. I am currently stuck as my code is only bring in the headers and no actual data for what I need. If anybody can help I would greatly appreciate it! My code looks like this:

Code:

#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#define Company ("Sierra Sporting Goods")
typedef struct
{
    double P[6];
int NUMBER, PRODUCT, QUANTITY;
double COST, PRICE;
char DESCRIPTION[18];
}INVENTORY;
void add();
void show(int NUMBER, int QUANTITY, double COST, double PRICE);
double total(double A, double B);
int getint(int MIN,int MAX, char prompt[]);
double getreal(double dMIN, double dMAX, char prompt[]);
int menu();
void show(INVENTORY rec, double COST, double PRICE, double profit, char DE[]);
void init_costs(double *P, int c);
void show_costs(double *P, char **DEPARTMENT, int c);
void gets(char entry[], char prompt[]);
void strcase(char *s);
void report();


char *DEPARTMENT[] = {"Camping", "Tennis", "Golf", "Snow Sports", "Water Sports"};




int main(void)
{
    int key;
do
    {
    key = menu();
    switch (key)
        { 
        case 1: add(); break;
        case 2: report(); break;
        case 3: 
        case 4: 
        case 5: return 0; break;
        default: printf("\nError choose again.");
        }
    }
    while (key);
return 0;
    }


int menu(void)/*Main Menu*/
{
    int choice;
    printf("\n%s\n", Company);


    printf("1 = Add a record\n");
    printf("2 = Report\n");    
    printf("3 = Delete a record\n");
    printf("4 = Change a record\n");
    printf("5 = Quit\n");
    choice = getint(1, 5, "Enter your selection: \n ");
    return(choice);
}




void add()/*Calls functions(main part of program)*/
{


double total_price, total_cost, profit;
char choice;
int readValues, items, c; 
int rNUMMIN = 0, rNUMMAX = 0, rTYPEMIN = 0, rTYPEMAX = 0, rQUANTITYMIN=0, rQUANTITYMAX=0;
double rCOSTMIN=0, rCOSTMAX=0, rPRICEMIN = 0, rPRICEMAX = 0;
INVENTORY rec;


    FILE *fp;    
    if ((fp = fopen("inventory.dat", "ab")) == NULL)
    {
        printf("Error opening file.");
        exit(1);
    }
    
    FILE *fr;
    if((fr = fopen("limits.txt", "r")) == NULL)
    {
    printf("File does not exist");
    exit (1);
    }
    else{
        readValues = fscanf(fr, "%d%d%d%d%d%d%lf%lf%lf%lf", &rNUMMIN, &rNUMMAX, &rTYPEMIN, &rTYPEMAX, &rQUANTITYMIN, &rQUANTITYMAX, &rCOSTMIN, &rCOSTMAX, &rPRICEMIN, &rPRICEMAX);
        
        if(readValues != 10){
            printf("Unable to get limits");
            exit(1);
        }
    }
    
init_costs(rec.P, 6);
fseek(fp, 0L, SEEK_END);
c = (int)ftell(fp) / sizeof(rec);
do
{    
    rec.NUMBER = getint(rNUMMIN, rNUMMAX, "product number: \n\n");
    rec.PRODUCT = getint(rTYPEMIN, rTYPEMAX, "product type: \n\n");
    gets(rec.DESCRIPTION, "description: \n\n");
    strcase(rec.DESCRIPTION);
    rec.QUANTITY = getint(rQUANTITYMIN, rQUANTITYMAX, "Quantity: \n\n");
    rec.COST = getreal(rCOSTMIN, rCOSTMAX, "product cost: \n\n");
    rec.PRICE = getreal(rPRICEMIN, rPRICEMAX, "product price: \n\n");
    
    total_cost = total(rec.COST, rec.QUANTITY);
    total_price = total(rec.PRICE, rec.QUANTITY);
    profit = total_price - total_cost;


    rec.P[rec.PRODUCT] += total_price;
    
    show_costs(rec.P, DEPARTMENT, 6);


    show(rec, total_cost, total_price, profit, rec.DESCRIPTION);
    
    printf("Enter another product: Y/N?");
    scanf("%c%*c", &choice); 
if (choice == 'y' || choice =='Y')
{
items = fwrite(&rec, sizeof(rec), 1, fp);
if (items == (int)NULL) printf("Error writing to file");
else c++;
}
}
while( choice == 'y' || choice == 'Y');
fclose(fr);
fclose(fp);
    return;
}




int getint(int MIN, int MAX, char prompt[])/*Min Max statement for values of number product and quantity*/
{
int a;


printf("\nEnter the %s %d to %d: ", prompt, MIN, MAX);
scanf("%d%*c", &a);
while ( a < MIN || a > MAX)
    {
    printf("\nInvalid, try again.\n");
    printf("\nEnter the %s %d to %d: ", prompt, MIN, MAX);
    scanf("%d%*c", &a);
    }
return (a);
}




double getreal(double dMIN, double dMAX, char prompt[])/*Function for cost and price*/
{    double a;


        printf("Enter the %s %.2f to %.2f: ", prompt, dMIN, dMAX);
        scanf("%lf%*c", &a);
        while ( a < dMIN || a > dMAX)
    {
    printf("\nInvalid, try again.\n");
    printf("Enter the %s %.2f to %.2f: ", prompt, dMIN, dMAX);
    scanf("%lf%*c", &a);
        }
    return(a);
}


double total(double A, double B)/*Function to be called for total price cost and profit*/
{    
    double n;
    double total_cost, total_price, profit;
    total_cost = (A * B);
    total_price = (A * B);
    return (total_cost);
    return (total_price);
    return(n);
}


void init_costs(double *P, int c)/*Intializes chart to 0*/
{
    int i;


    for (i = 1; i < c; i++)
        *(P + i) = 0;
}


void gets(char entry[], char prompt[])
{
printf("Enter the %s: ", prompt);
gets(entry);
}


void strcase(char *s)/*Uppercase the description*/
{
      int i = 0;
 
      *s = toupper(*s);
      s++;
    while (*s != NULL)
    {
      if (*s == ' ')
    {
     *(s+1) = toupper(*(s+1));
     s++;
     }
    else
    {
    *s = tolower(*s);
     }
      s++;
      }
}


void show_costs(double *P, char **DEPARTMENT, int c)/*Show costs by department*/
{
    int i;
    double total = 0;


printf("Total by category        Department\n");




for (P++, i = 1; i < c; i++, P++, DEPARTMENT++)
{
    printf("%2d%30s%20.2lf\n", i, *DEPARTMENT, *P);
    total += *P;
}


printf("%52.2lf\n", total);
}


void show(INVENTORY rec,  double total_cost, double total_price, double profit, char DESCRIPTION[])/*Show grand totals*/
{
printf("\nThe product number is--> %d.", rec.NUMBER);
printf("\nThe product type is----> %d.", rec.PRODUCT);
printf("\nThe description is-----> %4s.", rec.DESCRIPTION);
printf("\nThe quantity is--------> %d.", rec.QUANTITY);
printf("\nThe cost is------------> %.2lf.", total_cost);
printf("\nThe price is-----------> %.2lf.", total_price);
printf("\nThe profit is----------> %.2lf.", profit);


    printf("\nPress Enter to continue");
    getchar();
}


void report()
{    
    INVENTORY rec;
    int c, num = 0; 
    double profit;
    
    FILE *fp;
    printf ("\n\n", Company);
    fp = fopen("inventory.dat", "rb");
    if (fp == NULL) { printf("Error opening file.\a");
    return; 
    }
printf("Prod#  Type Description         Qty Cost Price Profit\n\n");
while (fread(&rec, sizeof(rec), 1, fp))
{
    ++num;
    printf("%04d %d %s %d %.2lf %.2lf %.2lf\n\n", rec.NUMBER, rec.PRODUCT,  rec.DESCRIPTION, rec.QUANTITY, rec.COST, rec.PRICE, profit);
}
printf("\nDone\n");
fclose(fp);
}