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

#define SIZE 200

// --------------------------------------------------
void read1(char *filename) {

  FILE *ptr;

  // Open a file for reading and check if operation succeeded
  if ( ( ptr = fopen(filename,"r")) ==  NULL ) {
    fprintf(stderr,"File %s could not be opened\n", filename);
    exit(1);
  }
  else {
    
    // As long as we didn't reach the end of the file
    while (!feof(ptr)) {
      
      char name[SIZE];
      float price;
      char available;
      int stock;
	  
      // Approach 1: we know what to expect, so we can
      // read the correct types directly
      if ( fscanf(ptr,"%s %f %c %d\n", name, &price, &available, &stock) == 4 ) {
	printf("Method1: %s %f %c %d\n", name, price, available, stock);
      } 
    }
    
  }
  fclose(ptr);

}

// --------------------------------------------------
void read2(char *filename) {

  FILE *ptr;

  // Open a file for reading and check if operation succeeded
  if ( ( ptr = fopen(filename,"r")) ==  NULL ) {
    fprintf(stderr,"File %s could not be opened\n", filename);
    exit(1);
  }
  else {
    
    // As long as we didn't reach the end of the file
    while (!feof(ptr)) {
      
      // Approach 2: we can read whole line at once
       char line[SIZE];

      if ( fgets(line, SIZE, ptr) ) {
	printf("Method2: %s",line);
      } 
      
    }
    
  }
  fclose(ptr);

}

// --------------------------------------------------
int main(int argc, char* argv[]) {


  if ( argc < 2 ) {
    fprintf(stderr,"Please enter file name\n");
    return 1;
  }

  char *input_file = argv[1];

  read1(input_file);
  printf("\n");
  read2(input_file);

  return 0;

}