Libishree/Dynamic-array-

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

/*

This stores the total number of books in each shelf. / int total_number_of_books;

/*

This stores the total number of pages in each book of each shelf.
The rows represent the shelves and the columns represent the books. / int* total_number_of_pages; int main() { int total_number_of_shelves; scanf("%d", &total_number_of_shelves);

int total_number_of_queries; scanf("%d", &total_number_of_queries);

total_number_of_books = (int *)malloc(sizeof(int)*total_number_of_shelves); total_number_of_pages = (int **)malloc(sizeof(int *)*total_number_of_shelves); for(int i = 0; i<total_number_of_shelves; i++){ (total_number_of_books + i) = 0; } while(total_number_of_queries--){ int type_of_query; scanf("%d", &type_of_query); if(type_of_query == 1){ int x, y; scanf("%d %d", &x, &y); int booksInShelf = (total_number_of_books + x); (total_number_of_pages + x) = (int)realloc((total_number_of_pages+x),sizeof(int)(booksInShelf+1)); ((total_number_of_pages+x)+booksInShelf) = y; *(total_number_of_books + x) += 1;
```
 } else if (type_of_query == 2) {
     int x, y;
     scanf("%d %d", &x, &y);
     printf("%d\n", *(*(total_number_of_pages + x) + y));
 } else {
     int x;
     scanf("%d", &x);
     printf("%d\n", *(total_number_of_books + x));
 }
```
}

if (total_number_of_books) { free(total_number_of_books); }

for (int i = 0; i < total_number_of_shelves; i++) { if ((total_number_of_pages + i)) { free((total_number_of_pages + i)); } }

if (total_number_of_pages) { free(total_number_of_pages); }

return 0; }