Output Text from File in Reverse Order in C - c

Question

I was trying to make a code on C, which reads the file.txt, outputs it into console, and then counts rows, words etc, and after all is exporting the content of file.txt to file2.txt but in reverse order.
The text need to go from this:
I
Love
You
to this:
ouY
evoL
I
What I have in my text.file:
enter image description here
What i get with my code now:
enter image description here
Here is my code that's need improvement, because it prints the code how i need but with blank rows, which is not needed. And it needs to be exporting into another file also:
fseek(fptr,0,SEEK_END);
pos=ftell(fptr);
i=0;
while(i<pos)
{
i++;
fseek(fptr,-i,SEEK_END);
ch=fgetc(fptr);
printf("%c",ch);
}
there's full code:
#include <stdio.h>
int main ()
{
FILE *fptr;
int i, n, j, pos;
char str[100];
char fname[20]="mfile.txt";
char newch[500];
int wrd=1,charctr=1,rows=1;
char str1;
char ch;
int no_lines = 1;
int COUNT = 0;
fptr = fopen(fname,"r");
if(fptr == NULL)
{
printf(" \n");
printf("File does not exist or can not be opened.");
}
else
{
ch=fgetc(fptr);
printf(" \n");
printf("The content of the file %s are: \n", fname);
printf(" \n");
while(ch != EOF)
{
printf("%c",ch);
if(ch==' '||ch=='\n')
{
wrd++;
}
else
{
charctr++;
}
if(ch=='\n')
{
rows++;
}
ch=fgetc(fptr);
}
int wrd1 = wrd - 1;
float charctr1 = charctr - 1;
float rows1 = rows;
float averageSymbol = charctr1 / rows1;
printf(" \n");
printf("\nwrd = %d, charctr = %d", wrd, charctr-1);
printf("\nThe number of rows in the file %s are : %d\n", fname,rows);
printf("\nThe average amount of symbols in a row is %f\n", averageSymbol);
printf(" \n");
}
fseek(fptr,0,SEEK_END);
pos=ftell(fptr);
i=0;
while(i<pos)
{
i++;
fseek(fptr,-i,SEEK_END);
ch=fgetc(fptr);
printf("%c",ch);
}
fclose(fptr);
return 0;
}

Answer 1

Ok so if I understand correctly you want to get rid of some of the empty lines which show up in your code and then you want to also write the output of the program (the reversed text) into another file? I am assuming that you want the sentences to be also in the original order.
#include <stdio.h>
int main ()
{
FILE *fptr;
FILE *fptr2;
int i, n, j, pos;
char str[100];
char fname[20]="mfile.txt";
char fname2[20]="outputfile.txt";
char newch[500];
int wrd=1,charctr=1,rows=1;
char str1;
char ch;
int no_lines = 1;
int COUNT = 0;
fptr2 = fopen(fname2, "w+");
fptr = fopen(fname,"r");
if(fptr == NULL)
{
printf(" \n");
printf("File does not exist or can not be opened.");
}
else
{
ch=fgetc(fptr);
printf("The content of the file %s are: \n", fname);
while(ch != EOF)
{
printf("%c",ch);
if(ch==' '||ch=='\n')
{
wrd++;
}
else
{
charctr++;
}
if(ch=='\n')
{
rows++;
}
ch=fgetc(fptr);
}
int wrd1 = wrd - 1;
float charctr1 = charctr - 1;
float rows1 = rows;
float averageSymbol = charctr1 / rows1;
printf("\nwrd = %d, charctr = %d", wrd, charctr-1);
printf("\nThe number of rows in the file %s are : %d\n", fname,rows);
printf("The average amount of symbols in a row is %f\n", averageSymbol);
}
fseek(fptr,0,SEEK_END);
pos=ftell(fptr);
i=0;
while(i<pos)
{
i++;
fseek(fptr,-i,SEEK_END);
ch=fgetc(fptr);
printf("%c",ch);
fputc(ch,fptr2);
}
fclose(fptr);
fclose(fptr2);
return 0;
}
This version first checks if a file called outputfile.txt exists and if no, it creates it. If said file already exists then the program overwrites the stuff which was originally in the file with the new program output (it doesn't clear the file all the way).