Structure is a collection of variables of different data types, grouped together by a single name.
The characteristics of structures in C language programming language are as follows-
All structural elements of different data types can be combined by using assignment Contents are copied to another structure variable of its type
In order to handle complex data types, it is better to create a structure within another structure, which is called a nested structure.
Can create structure pointers.
The following is a C programUsing structure to store inventory system -
#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 *****</p><p>"); printf("------------------------------------------------------------------</p><p>"); printf("S.N.| NAME | CODE | QUANTITY | PRICE |MFG.DATE</p><p>"); printf("------------------------------------------------------------------</p><p>"); for(i=0;i<n;i++) printf("%d %-15s %-d %-5d %-5d%d/%d/%d</p><p>",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("------------------------------------------------------------------</p><p>"); getch(); }
When the above program is executed, the following results are produced -
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
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