C program to illustrate dynamic memory allocation for structure and union

Write a C program to demonstrate dynamic memory allocation for structure and union.

  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>

  /* structure with 32 byte char array and integer */
  struct cinema {
        char name[32];
        int rating;
  };

  /* union with 32 byte character array and integer */
  union theater {
        char name[32];
        int noOfShows;
  };

  int main() {
        struct cinema *c1;
        union theater *t1;

        /* dynamically allocate memory for structure and union variables */
        c1 = (struct cinema *)malloc(sizeof(struct cinema));
        t1 = (union theater *)malloc(sizeof(union theater));

        /* assinging data to structure elements */
        strcpy(c1->name, "Pursuit Of Happiness");
        c1->rating = 10;

        /* assigning data to union elements */
        strcpy(t1->name, "Aries");
        t1->noOfShows = 4;

        /* printing the outputs */
        printf("struct cinema {\nname = %s\n", c1->name);
        printf("rating = %d\n}\n", c1->rating);

        /* contents of noOfShow will overwrite the contents in name */

        printf("\nunion theater {\nname = %s\n", t1->name);

        printf("noOfShows = %d\n}\n", t1->noOfShows);

        return 0;

  }

  Output:

  jp@jp-VirtualBox:~/$ ./a.out
  struct cinema {
    name = Pursuit Of Happiness
    rating = 10
  }

  union theater {
    name = ^
    noOfShows = 4
  }