fork download
copy 
  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. typedef struct {
  5.     int docid;
  6.     int freq;
  7. } pairs_t;
  8.  
  9. typedef struct {
  10.     char *word;
  11.     int numlines;
  12.     pairs_t *pairs;
  13.     int index;
  14.     int npairs;
  15. } data_t;
  16.  
  17. typedef struct {
  18.     data_t *data;
  19.     int numwords;
  20. } index_t;
  21.  
  22. int main(int argc, char *argv[]) 
  23. {
  24.     int initialsize = 1;
  25.     int count = 0;
  26.  
  27.     index_t *index;
  28.     index = malloc(sizeof(index_t));
  29.  
  30.     int required_size = 1;
  31.  
  32.     index->data = malloc(required_size * sizeof(data_t));
  33.  
  34.     //for first element of array
  35.     index->data[0].pairs = malloc(required_size * sizeof(pairs_t)); 
  36. 	//you can even realloc
  37.     index->data[0].pairs = realloc(index->data[0].pairs, 1 * sizeof(pairs_t));
  38.  
  39.     //now you can access the members of pairs this way
  40.  
  41.     index->data[0].pairs[0].docid = 777;
  42.     index->data[0].pairs[0].freq  = 777;
  43.  
  44.     printf("docid : %d\nfreq  : %d", index->data[0].pairs[0].docid, index->data[0].pairs[0].freq);
  45.  
  46. 	free(index->data[0].pairs);
  47. 	free(index->data);
  48. 	free(index);
  49.  
  50.     count++;
  51.  
  52.     return 0;
  53. }
Success #stdin #stdout 0s 2300KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
docid : 777
freq  : 777
https://ideone.com/Bg6aWa
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!