Solution: File Reading and Writing

#include <stdio.h>
int main(void)
{
  
  FILE *fp;               // Pointer to the file to be read
  FILE* fout;             // Pointer to the file to be written
  
  int numfruits = 12;      // There are 12 fruits listed in fruits.txt
  char myFruits[numfruits][256];    // Each fruit name has a length smaller than 256
  char myFruitsReversed[numfruits][256];
  int i, j;              // Needed for looping
  int indexEnd, count;   // Needed for reversing strings
  // Open both files in the appropriate read or write mode
  fp = fopen("fruits.txt", "r");
  fout = fopen("output/outfile.txt", "w");
  
  // Exit if there's an error opening either of the files
  if (fp == NULL) 
  {
    printf("There was an error opening fruits.txt\n");
    return 1;
  }
  else if (fout == NULL) 
  {
    printf("There was an error opening the file output/outfile.txt\n");
    return 1;
  }
  else
  {
    // Loop and on step i, read the i^th string into the array
    i = 0;
    while (!feof(fp)) 
    { 
      fscanf(fp, "%s\n", &myFruits[i]);
      i++;
    }
    // For each string, find its size, reverse it and write it out
    for(i = 0; i < numfruits; i++)
    {
        // Count the number of characters in the string
        j = 0; 
        count = 0; 
        while(myFruits[i][j] != 0) 
        {
            count++; 
            j++; 
        }
        // Reverse the i^th string that was read
        j = 0;
        indexEnd = count - 1;    
        while(j < count)
        {
            myFruitsReversed[i][j] = myFruits[i][indexEnd];
            j++;
            indexEnd--;
        }  
        //Insert a null character at the end of the reversed string
        myFruitsReversed[i][j]='\0'; 
        // Write out the reversed string
        fprintf(fout, "%s \n", myFruitsReversed[i]);
    }
    
    // Close both file streams
    fclose(fp);
    fclose(fout);
  }
  return 0;
}