Thread: Retail Management

Hey everyone,

Have an assignment to create a retail management system using arrays.

I guess what I need help on is with writing arrays and fuctions that would modify them.

I know there are people on this board who are in my same class so if yall have any help or coded any bit of it that would be great, I havent started yet, but as soon as I do I'll post my code up.

Thanks

The idea would be for you to post your code and from that ask what you have problems with. We aren't here to do your assignments for you, naturally, so that's the way things work around here...

I'm one of those in your class. I could use some help on a few things, but I also have some of it down. You can PM me and we can work together, or post some of your code and I can try and help you and vice versa.

If you have some code, and some questions, by all means post 'em up, asap. "Retail Management" with arrays is extremely non-specific.

Yes, and where is ifp declared? It isn't in the code you posted. All variables must be declared. If you haven't done so, then do so. But avoid global variables, if you can.

I declared ifp, see my edit above, now my problem is getting incompatible type for argument 1 of fscanf as well as fgetc in this code

Code:

 
void input(FILE ifp, int input_item_id[counter], int input_stock[counter], float UnitPrice[counter]){
   while(input_item_id[counter] != 0 && input_stock[counter] != 0 
   && UnitPrice[counter] != 0){
 
         fscanf(ifp, "%d", &input_item_id[counter]);
         fscanf(ifp, "%d", &input_stock[counter]);
         fscanf(ifp, "%f", &UnitPrice[counter]);

      counter++;
} 

while ((c=fgetc(ifp)) != EOF) {

fopen, etc returns a FILE*. fscanf and fgets takes a FILE* as argument, not FILE.

Originally Posted by Salem

> void input(FILE ifp
void input(FILE *ifp

Also, as I explained to one of your colleagues, you're incrementing the counter THEN comparing to see if the last read values where 0 0 0

Not sure what you mean by incrementing the counter then...

Thanks for the help though, its finally coming along.

Now I have a problem in my switches

Code:

 void ActionCode(int *);
      switch (ActionCode){
         case 1:
            {
            void CURRENTSTATUS (int ItemId[counter], int Stock[counter], 
            int UnitPrice[counter], char Sufficient){
                                   
               printf("CURRENT STATUS\n");
               printf("Id\tStock\tPrice\tSufficient\n");
               printf("%d\t%d\t%.2f\t%c\n", ItemId, Stock, UnitPrice, 
               Sufficient);

it says that my switch quantity is not an integer, can someone explain that? Thanks.

Oops, my bad!

Ok, this is what I have as of now.

Code:

#include <stdio.h>
#define MAX_TBL_SIZE 30
#define MIN_STOCK_LEVEL 10
#define MAXSTRING 100

int counter, stock[MAX_TBL_SIZE], input_item_id[MAX_TBL_SIZE], input_stock[MAX_TBL_SIZE]; float UnitPrice[MAX_TBL_SIZE];
void ActionCode(int *);
void input(FILE *ifp,int input_item_id[MAX_TBL_SIZE], int input_stock[MAX_TBL_SIZE], int c, float Unitprice[MAX_TBL_SIZE]);
void CURRENTSTATUS (int ItemId[counter], int Stock[counter], int UnitPrice[counter], char Sufficient);

int main(void) {

   char file_name[MAXSTRING];
   int num, r, c;
   int ActionCode, ItemId, Stock, UnitPrice, Sufficient, qty_sold, qty_new,
   input_item_id, unit_price;
   FILE *ifp;
   FILE *ofp;
 
   fprintf(stderr, "Enter the name of the input file: \n");
   fscanf(ifp, "%d", &num);
   fprintf(ofp, "num = %f\n", num);
   ifp = fopen("file_name", "r");
   system("PAUSE");
   return 0;
}   

//Obtaining action code and use switch to process action

//Void function obtaining imput file
void input(FILE *ifp, int input_item_id[counter], int input_stock[counter], int c, float UnitPrice[counter]){
   while(input_item_id[counter] != 0 && input_stock[counter] != 0 
   && UnitPrice[counter] != 0){
 
         fscanf(ifp, "%d", &input_item_id[counter]);
         fscanf(ifp, "%d", &input_stock[counter]);
         fscanf(ifp, "%f", &UnitPrice[counter]);

      counter++;
} 

while ((c=fgetc(ifp) != EOF)) {

/* Use a switch statement instead */
void ActionCode(int *);
int number=1;
      switch (number){
         case 1:
            {
            void CURRENTSTATUS (int input_item_id[counter], int Stock[counter], 
            int UnitPrice[counter], char Sufficient){
                                   
               printf("CURRENT STATUS\n");
               printf("Id\tStock\tPrice\tSufficient\n");
               printf("%d\t%d\t%.2f\t%c\n", input_item_id, Stock, UnitPrice, 
               Sufficient); 
            }
            break;
                        
         case 2:
            if(input_stock[counter] == 0);
            printf("There is no item with id %d.\n", input_item_id[counter]);
            break; 

         case 3:
            printf("After sale, there are %d items with id %d.\n", 
            stock[counter], input_item_id[counter]);
         
               if(stock[counter] < MIN_STOCK_LEVEL){
               printf("This product needs to be reordered.\n");
               }
            break;    
         
         case 4: /* input_item_id == 1 */ 
            printf("After purchase, there are %d items with id %d.\n", 
            stock[counter],input_item_id[counter]); 
            
               if(stock[counter] < MIN_STOCK_LEVEL){
               printf("This product needs to be reordered.\n");
               }
            break;

         case 5:

               print("Items to be reordered\n");
               print("%d\n", input_item_id[counter]);
               }
               break;
            
            
         case 6:
            if  (stock[counter] <= 1)
            printf("Lowest stock: Only %d items left with id %d.\n", 
            stock[counter], input_item_id[counter]);
            printf("URGENT ORDER - this product needs to be re-ordered immediately\n");
            break;
             
            
                    
         case 7:
            UnitPrice[counter] += stock[counter] * UnitPrice[counter];
            printf("Total price of all the items: $.2f\n", UnitPrice[counter]);
            break;
            
         case 8:
            printf("Good Bye!\n");
            break;
      }  
   }        
}

Sorry if you told me a suggestion and I did it wrong, I try to understand best I can but all this stuff is so confusing to me. Right now if I try to compile this I get an error saying linker error undefined reference to print.