#include <stdio.h>

void main(){
    int input = 1;
    int errors = 0;
    int runCount = 0;
    int input1 = 0, input2 = 0;
    int isPerfect = 0, isGerman = 0, isLowerPair = 0, isPrime = 0, isPalindrome = 0;
    int sum = 0;
    int i, j;
    while (input != 0 && errors < 5){
        sum = 0;
        isPerfect = isGerman = isLowerPair = isPrime = isPalindrome = 0;
        if (input == 1 || input == 2){
            printf("The menu:\n 0. Exit.\n 1. Print menu again.\n 2. Number details in range.\n 3. Layers square printing.\n Please enter your choice:\n");
            scanf("%d", &input);
            if (input == 1){

            } else if (input == 2){
                printf("Please enter the first int positive number (up to 8 digits):\n");
                scanf("%d", input1);
                while (input1 < 1 || input1 > 99999999){
                    printf("Please enter the first int positive number (up to 8 digits):\n");
                    scanf("%d", input1);
                }

                while (input2 < input1 + 10 && input2 > input1 + 150){
                    printf("Please enter the 2nd positive number between %d and %d:\n", input1 + 10, input1 + 150);
                    scanf("%d", input2);
                }

                for (i = input1; i <= input2; i++){
                    for (j = 1; j < i; j++){
                        if (i % j == 0){
                            sum += j;
                        }
                    }

                    isGerman = 1;
                    for (j = 2; j < 2 * i + 1; j++){
                        if (i % j == 0){
                            isGerman = 0;
                            break;
                        }
                    }

                    isPrime = 1;
                    for (j = 2; j < i; j++){
                        if (i % j == 0){
                            isPrime = 0;
                            break;
                        }
                    }

                    isLowerPair = 1;
                    if (isPrime){
                        for (j = 2; j < i - 2; j++){
                            if ((i - 2) % j == 0){
                                isLowerPair = 0;
                                break;
                            }
                        }
                    }
                }
            } else {
                errors++;
            }
        }
        else if (input != 0 && errors < 5){
            printf("Wrong input. please try again (enter 1 for re-printing the menu) :\n");
            scanf("%d", &input);
            if (input != 1 && input != 2){
                errors++;
            }
        }
    }


    printf("bye bye !!\n");

}