file_exists

// apple xcode
// paulogp

/* file_exists: checks if the file exists */
#include <stdio.h>
#include <unistd.h>
#include <string.h>

#define MAX_VECT_LENGTH 255

int file_exists (char *the_file);

int file_exists (char *the_file)
{
    FILE *the_file_ptr;

    // open file
    the_file_ptr = fopen (the_file, "r");

    // if is not there...
    if (the_file_ptr == NULL)
        return 0;
    else
        return 1;
}

int main (int argc, const char * argv[])
{
    char the_file_name[MAX_VECT_LENGTH];
    char *the_file_ptr;
    char the_file_path[MAX_VECT_LENGTH];
    int the_result = 0;

    // get file path / name
    printf("ficheiro: ");
    fgets (the_file_name, sizeof(the_file_name), stdin);
    // token \n
    // NOTE: the_file_ptr points to the_file_name
    the_file_ptr = strtok (the_file_name, "\n");

    // output current directory
    getcwd(the_file_path, 255);
    printf ("path: %s\n", the_file_path);

    // file existence
    the_result = file_exists (the_file_ptr);

    if (the_result == 0)
        printf ("o ficheiro nao existe!\n");
    else
        printf ("ficheiro encontrado!\n");

    return (0);
}