Question

I need write a small "c" program that has locations of items on a shelving unit. Im not familiar with this language. Can you guys give me some hint so I could start writing one or as example. This is my first time learning programming C.

Specifically, your program should:

• Contain a struct representing an item on the shelf. It needs only contain the item's name and price.
• Ask the user for the number of shelves in the unit, and the number of "slots" available on each shelf which can hold items.
• From the above, build a two dimensional array of item structs. The array represents locations on the shelving unit (rows = shelves, columns = slots on the shelves).
• Allow the user to add items to the shelves by giving the name, price, and location by reading input in the format: <name>, <price>, <shelf>, <slot>
• Allow the user to indicate they are done adding items. At this point the user should be able to enter the coordinate of an item in the shelving unit and the program should print out the information about the selected item (or some message if that slot is empty).

Answer 1

Solution(Code):

#include<stdio.h>
#include<string.h>
struct item
{
   char name[20];
   int price;
};
int main()
{
   int nsl,ns,i,j,price,shelf,slot;
   char choice,name[20],dummy;
  
   printf("Enter number of shelves in the unit:");
   scanf("%d",&ns);
   printf("Enter number of slots for each shelf:");
   scanf("%d",&nsl);
   struct item items[ns][nsl];  
  
   for(i=0;i<ns;i++)
   {
       for(j=0;j<nsl;j++){
           strcpy(items[i][j].name,"");
           items[i][j].price=-1;
       }
   }
   printf("Enter -1 for name to stop adding items\n");
   while(1)
   {
       scanf("%s%d%d%d",name,&price,&shelf,&slot);
       scanf("%c",&dummy);
       if(strcmp(name,"-1")==0)
           break;
       strcpy(items[shelf-1][slot-1].name,name);
       items[shelf-1][slot-1].price=price;      
   }
   printf("Enter the co-ordinate of an item in the shelving unit:");
   scanf("%d%d",&shelf,&slot);
   if(items[shelf-1][slot-1].price!=-1)
       printf("Item details\nItem name:%s\nItem price:%d\n",items[shelf-1][slot-1].name,items[shelf-1][slot-1].price);
   else
       printf("Empty slot\n");

   return 0;
}

Output: