if(mode == 2){
        printf("Program uruchomiono w trybie czytania z pliku \n");
        FILE * input = fopen(argv[2],"r");
        int ascii = fgetc(input);
        int i = 0;
        while(ascii != EOF){
            printf("%X ", ascii);
            ascii = fgetc(input);
            i++;
            if (i >= 15){
                printf("\n");
                i = 0;
            }

        }
        fclose(input);
    }