File Management in C

#include <bits/stdc++.h>

int main()
{
    FILE *fp, *fp2, *fp3;
    int vowel = 0, consonant = 0;
    char ch;
    char message[200];

    fp = fopen("E:\\Lab 2\\input.txt", "r");
    fp2 = fopen("E:\\Lab 2\\vowel.txt", "w");
    fp3 = fopen("E:\\Lab 2\\consonant.txt", "w");

    if (!fp)
    {
        perror("Error: ");
        exit(1);
    }

    while (!feof(fp))
    {
        fgets(message, 200, fp);
        printf("%s", message);
    }
    printf("\n\n");

    fseek(fp, 0, SEEK_SET);

    while (ch != EOF)
    {
        ch = fgetc(fp);
        if ((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z'))
        {
            if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u' || ch == 'A' || ch == 'E' || ch == 'I' || ch == 'O' || ch == 'U')
            {
                fputc(ch, fp2);
                vowel++;
            }
            else
            {
                fputc(ch, fp3);
                consonant++;
            }
        }
    }

    fprintf(fp2, "\nCount:%d", vowel);
    fprintf(fp3, "\nCount:%d", consonant);

    fclose(fp);
    fclose(fp2);
    fclose(fp3);
    return 0;
}