Thread: Storing information into struct array

This program is supposed to read in a text file and do the following:

• Read in the file
• Look for the line with the number of circles
• Skip the number of line there are of number of circles
• Look for line with number of friends
• Allocate an array with just enough space for the number of friends
• Parse and store the friends

Issues:

• I am not sure on how to parse the information into the friend array using the friend struct in defaultPrint.c
• Please look over my code if possible to mention any bugs or syntax I may have missed

Code:

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


void main(int argc, char **argv)
{
  int i,x,size,wordnum;
  char max[256];
  char *fname,*word,*friends,*line,*prev,*curr;
  FILE *file;
  friend *friendArray;


  //Check for command line arguments
  if (argc <= 1)
    {
      printf("Insufficient number of inputs\n");
      exit(1);
    }


  //Open the file and check if file exists
  fname = argv[1];
  file = fopen(fname,"r");


  if (file == NULL)
    {
      printf("Cannot open input file %s\n",fname);
      exit(2);
    }


  //Read in file line by line and search word
  while(!feof(file))
    {
      line = fgets(max, sizeof(max), file);


      prev = strtok(max," ");
      while((curr = strtok(NULL," ")) != NULL)
	{
	  if (strstr(curr, "circle") != NULL)
	    {
	      printf("%s %s",prev,curr);
	      //skip lines amounting to number of circles
	      for(i=1;i<atoi(prev);i++)
		printf("\n");
	    }
	  if (strstr(curr, "friend") != NULL)
	    {
	      printf("%s %s",prev,curr);
	      //allocate array with the number of friends
	      friendArray = malloc(sizeof(friend)*atoi(prev)+1);
	      for(i=0;i<atoi(prev);i++)
		{
                     //for loop maybe to store info into the friend
                     //struct/array???
		}
	    }
	}
    }
//call defaultPrint somehow here
  fclose(file);
}

defaultPrint.c

Code:

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


void defaultPrint(friend *array, int num_friends, FILE *outfile)
{
	int i;
	printf("Default print function\n");
	for(i=0;i<num_friends;i++)
		fprintf(stdout,"%d: %s, %s, %s\n",i,
			array[i].lastname,
			array[i].firstname,
			array[i].birthdate);
	
}

printFriends.h

Code:

#ifndef PRINTFRIENDS_H
#define PRINTFRIENDS_H


typedef struct _friend{
   char *lastname;
   char *firstname;
   char birthdate[9];
} friend;


void defaultPrint(friend *array, int num_friends, FILE *outfile);
#endif