HackerRank C- Structuring the Document

A document is represented as a collection paragraphs, a paragraph is represented as a collection of sentences, a sentence is represented as a collection of words and a word is represented as a collection of lower-case ([a-z]) and upper-case ([A-Z]) English characters. You will convert a raw text document into its component paragraphs, sentences and words. To test your results, queries will ask you to return a specific paragraph, sentence or word as described below.

Alicia is studying the C programming language at the University of Dunkirk and she represents the words, sentences, paragraphs, and documents using pointers:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#define MAX_CHARACTERS 1005
#define MAX_PARAGRAPHS 5

struct word {
    char* data;
};

struct sentence {
    struct word* data;
    int word_count;//denotes number of words in a sentence
};

struct paragraph {
    struct sentence* data  ;
    int sentence_count;//denotes number of sentences in a paragraph
};

struct document {
    struct paragraph* data;
    int paragraph_count;//denotes number of paragraphs in a document
};

struct document get_document(char* text) {

    struct document doc;

    doc.data = malloc(sizeof(struct paragraph) * 5);
    doc.paragraph_count = 0;

    for (int p=0; p<5; p++) {
        doc.data[p].data = malloc(sizeof(struct sentence) * 16);
        doc.data[p].sentence_count = 0;
        for (int s = 0; s < 16; s++) {
          doc.data[p].data[s].data = malloc(sizeof(struct word) * 128);
          doc.data[p].data[s].word_count = 0;
          for (int w = 0; w < 128; w++){
              doc.data[p].data[s].data[w].data = malloc(sizeof(char) * 256);
            }
        }
    }

    int p = 0, s = 0, w = 0, c = 0;
    
    for (int i = 0; i<strlen(text); i++) {

        if (text[i] == ' '){
            doc.data[p].data[s].data[w].data[c] = '\0';
            doc.data[p].data[s].word_count++;
            c = 0;
            w++;
            continue;
        }

        if (text[i] == '.'){
            doc.data[p].data[s].data[w].data[c] = '\0';
            doc.data[p].data[s].word_count++;
            doc.data[p].sentence_count++;
            c = 0; w = 0;
            s++;
            continue;
        }

        if (text[i] == '\n'){
            doc.paragraph_count++;
            c = 0; w = 0; s = 0;
            p++;
            continue;;
        }

        doc.data[p].data[s].data[w].data[c++] = text[i];

    }

    return doc;

}

struct word kth_word_in_mth_sentence_of_nth_paragraph(struct document Doc, int k, int m, int n) {
    return Doc.data[n-1].data[m-1].data[k-1];
}

struct sentence kth_sentence_in_mth_paragraph(struct document Doc, int k, int m) { 
    return Doc.data[m-1].data[k-1];
}

struct paragraph kth_paragraph(struct document Doc, int k) {
    return Doc.data[k-1];
}




void print_word(struct word w) {
    printf("%s", w.data);
}

void print_sentence(struct sentence sen) {
    for(int i = 0; i < sen.word_count; i++) {
        print_word(sen.data[i]);
        if (i != sen.word_count - 1) {
            printf(" ");
        }
    }
}

void print_paragraph(struct paragraph para) {
    for(int i = 0; i < para.sentence_count; i++){
        print_sentence(para.data[i]);
        printf(".");
    }
}

void print_document(struct document doc) {
    for(int i = 0; i < doc.paragraph_count; i++) {
        print_paragraph(doc.data[i]);
        if (i != doc.paragraph_count - 1)
            printf("\n");
    }
}

char* get_input_text() {	
    int paragraph_count;
    scanf("%d", &paragraph_count);

    char p[MAX_PARAGRAPHS][MAX_CHARACTERS], doc[MAX_CHARACTERS];
    memset(doc, 0, sizeof(doc));
    getchar();
    for (int i = 0; i < paragraph_count; i++) {
        scanf("%[^\n]%*c", p[i]);
        strcat(doc, p[i]);
        if (i != paragraph_count - 1)
            strcat(doc, "\n");
    }

    char* returnDoc = (char*)malloc((strlen (doc)+1) * (sizeof(char)));
    strcpy(returnDoc, doc);
    return returnDoc;
}

int main() 
{
    char* text = get_input_text();
    struct document Doc = get_document(text);

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

    while (q--) {
        int type;
        scanf("%d", &type);

        if (type == 3){
            int k, m, n;
            scanf("%d %d %d", &k, &m, &n);
            struct word w = kth_word_in_mth_sentence_of_nth_paragraph(Doc, k, m, n);
            print_word(w);
        }

        else if (type == 2) {
            int k, m;
            scanf("%d %d", &k, &m);
            struct sentence sen= kth_sentence_in_mth_paragraph(Doc, k, m);
            print_sentence(sen);
        }

        else{
            int k;
            scanf("%d", &k);
            struct paragraph para = kth_paragraph(Doc, k);
            print_paragraph(para);
        }
        printf("\n");
    }     
}