C program to store inventory system using structures

Structure is a collection of different datatype variables, grouped together under a single name.

Features of structure

The features of structure in the C programming language are as follows −

• It is possible to copy the contents of all the structure elements of different datatypes to another structure variable of its type by using an assignment operator.

• For handling the complex datatypes, it is better to create structure within another structure, which is called nested structures.

• It is possible to pass an entire structure, individual elements of structure and an address of structure to a function.

• It is possible to create structure pointers.

Program

Following is the C program to store an inventory system by using the structures −

#include<stdio.h>
#include<conio.h>
void main(){
   struct date{
      int day;
      int month;
      int year;
   };
   struct details{
      char name[20];
      int price;
      int code;
      int qty;
      struct date mfg;
   };
   struct details item[50];
   int n,i;
   printf("Enter number of items:");
   scanf("%d",&n);
   fflush(stdin);
   for(i=0;i<n;i++){
      fflush(stdin);
      printf("Item name:");
      scanf("%s",item[i].name);
      fflush(stdin);
      printf("Item code:");
      scanf("%d",&item[i].code);
      fflush(stdin);
      printf("Quantity:");
      scanf("%d",&item[i].qty);
      fflush(stdin);
      printf("price:");
      scanf("%d",&item[i].price);
      fflush(stdin);
      printf("Manufacturing date(dd-mm-yyyy):");
      scanf("%d-%d-%d",&item[i].mfg.day,&item[i].mfg.month,&item[i].mfg.year);
   }
   printf(" ***** INVENTORY *****
");
   printf("------------------------------------------------------------------
");
   printf("S.N.| NAME | CODE | QUANTITY | PRICE |MFG.DATE
");
   printf("------------------------------------------------------------------
");
   for(i=0;i<n;i++)
      printf("%d %-15s %-d %-5d %-5d%d/%d/%d
",i+1,item[i].name,item[i].code,item[i].qty,item[i].price,item[i].mfg.day,item[i].mfg.month,item[i].mfg.year);
   printf("------------------------------------------------------------------
");
   getch();
}

Output

When the above program is executed, it produces the following result −

Enter number of items:5
Item name:pen
Item code:12
Quantity:50
price:25
Manufacturing date(dd-mm-yyyy):12-02-2020
Item name:pencil
Item code:15
Quantity:100
price:30
Manufacturing date(dd-mm-yyyy):11-03-2020
Item name:book
Item code:34
Quantity:30
price:60
Manufacturing date(dd-mm-yyyy):15-04-2020
Item name:bag
Item code:39
Quantity:20
price:70
Manufacturing date(dd-mm-yyyy):12-03-2021
Item name:sharpner
Item code:33
Quantity:20
price:40
Manufacturing date(dd-mm-yyyy):12-04-2021
***** INVENTORY *****
------------------------------------------------------------------
S.N.| NAME | CODE | QUANTITY | PRICE |MFG.DATE
------------------------------------------------------------------
1    pen    12       50          25    12/2/2020
2   pencil  15       100         30    11/3/2020
3    book   34       30          60    15/4/2020
4    bag    39       20          70    12/3/2021
5  sharpner 33       20          40    12/4/2021