לא עובד

#include <stdio.h>
#include <stdlib.h>
enum status {success, fail};
void main() {
    enum status sss=success;
    FILE *fp1,*fp2;
    char q1,q2,i=1;
    fp1 = fopen("rrr.txt" , "r");
    fp2 = fopen("ttt.txt" , "r");

    if(fp1 == NULL || fp1 == NULL) {
        printf("Can't open file\n");
        exit(0);
    }

    do{
        if (feof(fp1) != !feof(fp2) ){ // כנראה כאן הבעיה
            sss=fail;
            printf("Length is not the same\n");
            printf("I = %d\n",i);
            break;
        }
        if (feof(fp1)){
            printf("Length is the same\n");
            if (feof(fp2)) printf("F2 ends too\n");
            break;
        }
        q1 = fgetc(fp1);
        q2 = fgetc(fp2);
        if (q1 != q2){
            printf("Different value\n");
            sss=fail;
            break;
        }
        i=0;
    } while(1);

    (sss==success)? printf("The files are the same!\n"): printf("The files are NOT the same!\n");
    fclose(fp1);
    fclose(fp2);
}