C program to store information using structures with dynamically memory allocation

PROGRAM:

#include <stdio.h>

#include<stdlib.h>

struct course

{

   int marks;

   char subject[30];

};

int main()

{

   struct course *ptr;

   int i, noOfRecords;

   printf("Enter number of records: ");

   scanf("%d", &noOfRecords);

   ptr = (struct course*) malloc (noOfRecords * sizeof(struct course));

   for(i = 0; i < noOfRecords; ++i)

   {

       printf("Enter name of the subject and marks respectively:\n");

       scanf("%s %d", &(ptr+i)->subject, &(ptr+i)->marks);

   }

       printf("Displaying Information:\n");

       for(i = 0; i < noOfRecords ; ++i)

       printf("%s\t%d\n", (ptr+i)->subject, (ptr+i)->marks);

   return 0;

}

OUTPUT:

Enter number of records: 2

Enter name of the subject and marks respectively:

Programming

22

Enter name of the subject and marks respectively:

Structure

33

Displaying Information:

Programming      22

Structure        33

Store information(name, roll and marks) of a student using structure Add two distances (in inch-feet) system using structures Add two complex numbers by passing structure to a function Calculate difference between two time periods Store information of students using structure Store information using structures with dynamically memory allocation