Here's my solution for this problem :- struct document get_document(char* text) { int s=0,p=1,i,j,k,l,m; for(i=0;text[i]!='\0';i++) if(text[i]=='.') ++s; else if(text[i]=='\n') ++p; int wc[p][s]; int sc[p]; for(i=0;i ++j; k=0; } }

struct document *doc=malloc(sizeof(struct document)); struct paragraph *para=malloc(p*sizeof(struct paragraph)); doc->paragraph_count=p; doc->data=para; for(int i=0;idata[i].sentence_count=sc[i]; doc->data[i].data=sentn; for(int j=0;jdata[i].data[j].word_count=wc[i][j]; doc->data[i].data[j].data=wrd; for(int k=0;kdata[i].data[j].data[k].data=malloc(50*sizeof(char)); } } j=0,k=0,l=0,m=0; for(i=0;i!=strlen(text);i++) { if(text[i]!='\n'&&text[i]!='.'&&text[i]!=' ') { doc->data[j].data[k].data[l].data[m]=text[i]; ++m; } if(text[i]==' ') { m=0; ++l; } else if(text[i]=='.') { l=0; m=0; ++k; } else if(text[i]=='\n') { ++j; k=0; l=0; m=0;
} } 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];}