Comparing two files in C language.

Operations on More than one File. 

 #include<stdio.h>

#include<stdlib.h>

#include<string.h>

int main(int argc, char const* argv[])

{

    FILE* file_ptr1;

    FILE* file_ptr2;

    file_ptr1 = fopen("test1.txt", "r");

    file_ptr2 = fopen("test2.txt", "r");

    char word1 [15], word2 [15];

    int total_count = 0;

    while (fscanf(file_ptr1, "%s", word1) != EOF)

    {

        int count = 0;

        fseek(file_ptr2, 0, SEEK_SET);

        while (fscanf(file_ptr2, "%s", word2) != EOF)

        {

            if (strcmp(word1, word2) == 0)

            {

                count++;

            }

        }

        if (count == 0)

        {

            total_count++;

            printf("\"%s\" ---> not in file.\n", word1);

        }

    }

    printf("%d words are not in file.\n", total_count);

    fclose(file_ptr1);

    fclose(file_ptr2);

    return 0;

}