How to copy a file character by character in C ?

file_copy.c

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

/* Copy a file one character at a time .*/

int
        main
            (int argc , char * argv [ ] ){
    if (argc != 3 ){
        printf ("%s\n" , "Usage: fgp fom to" );
        exit (EXIT_FAILURE ); }

    char *fromPath , *toPath;

    fromPath = argv [1 ];
    toPath = argv [2 ];

    FILE *from = fopen (fromPath , "r" );
    if (!from ){
        perror (fromPath );
        exit (EXIT_FAILURE ); }

    FILE *to = fopen (toPath , "a" );
    if (!to ){
        perror (toPath );
        if(fclose (from ) != 0 )
            perror (fromPath );
        exit (EXIT_FAILURE ); }

    char c;

    while (((c = getc (from ) ) != EOF )
            &&
          (putc (c , to ) != EOF ));

    if (ferror (from ) )
        perror (fromPath );
    if (ferror (to ) )
        perror (toPath );

    if (fclose (from ) != 0 )
        perror (fromPath );

    if (fclose (to ) != 0 )
        perror (toPath ); }