FoCP lab 23.11

#include <stdlib.h>
#include <io.h>
#include <iostream>
#include <time.h>
#include <string.h>

struct student
{
    char name[40];
    unsigned int age;
    char id[11];
    unsigned int group;
};

struct student* arr [10] = { 0 };

void Print(int i)
{
    printf("Imie studenta: %s\n", arr[i]->name);
    printf("Wiek studenta: %d\n", arr[i]->age);
    printf("Pesel studenta: %s\n", arr[i]->id);
    printf("Grupa studenta: %d\n", arr[i]->group);
}

void Save()
{
    int i = 0;

    for (i; i < 10; i++)
    {
        if (arr[i] == NULL)
        {
            arr[i] = (struct student*)malloc(sizeof(struct student));
            printf("Podaj imie studenta:\n");
            scanf("%s", arr[i]->name);
            printf("Podaj wiek studenta:\n");
            scanf("%d", &arr[i]->age);
            printf("Podaj pesel studenta:\n");
            scanf("%s", arr[i]->id);
            printf("Podaj grupe studenta:\n");
            scanf("%d", &arr[i]->group);
            break;
        }
    }
}

void Edit(int n)
{

    arr[n] = (struct student*)malloc(sizeof(struct student));
    printf("Podaj imie studenta:\n");
    scanf("%s", arr[n]->name);
    printf("Podaj wiek studenta:\n");
    scanf("%d", &arr[n]->age);
    printf("Podaj pesel studenta:\n");
    scanf("%s", arr[n]->id);
    printf("Podaj grupe studenta:\n");
    scanf("%d", &arr[n]->group);
}

int main()
{
    int studentsNumber = 0;

Entrance:
    system("cls");
    printf("======Program tworzacy profil studenta=======\n");
    printf("======Wcisnij:===============================\n");
    printf("======1. By dodac studenta===================\n");
    printf("======2. By zmienic studenta dane============\n");
    printf("======3. By wyswietlic dane studenta=========\n");
    printf("======0. By wyjsc============================\n");

    int choice = 0;

    scanf("%d", &choice);

    switch (choice)
    {
    case 1:
        {
            system("cls");
            Save();
            studentsNumber++;
            goto Entrance;
        }
    case 2:
        {
            Edit:
            system("cls");
            printf("Podaj pesel studenta do edycji:\n");
            char studentsID[11];
            scanf("%s", &studentsID);

            int chosenStudent = 100;

            for (int i = 0; i < 10; i++)
            {
                for (int j = 0; j < 11; j++)
                {
                    if (arr[i] != NULL)
                    {
                        if (arr[i]->id[j] != studentsID[j])
                        {
                            break;
                        }

                        if (j == 10)
                        {
                            chosenStudent = i;
                        }
                    }
                }
            }

            if (chosenStudent == 100)
            {
                printf("Nieprawdilowy pesel!\n");
                goto Entrance;
            }

            system("cls");
            Edit(chosenStudent);

            goto Entrance;
        }
    case 3:
        {
            Start:
            system("cls");
            printf("Wyswietlic wszystkie dane czy jednego studenta(wszystkie - 1, jednego - 2)?\n");
            int locChoice = 0;
            scanf("%d", &locChoice);

            system("cls");

            switch(locChoice)
            {
                case 1:
                    {
                        for (int i = 0; i < studentsNumber; i++)
                        {
                            if (arr[i]->name != "")
                            {
                                printf("Numer studenta: %d\n", i);
                                Print(i);
                                printf("\n");
                            }
                        }
                        break;
                    }
                case 2:
                    {
                        printf("Podaj pesel studenta:\n");
                        char ID[11];
                        scanf("%s", &ID);

                        int printedNumber = 0;

                        system("cls");

                        for (int i = 0; i < studentsNumber; i++)
                        {
                            if (arr[i]->name != "")
                            {
                                bool print = true;

                                for (int j = 0; j < 11; j++)
                                {
                                    int temp = 1;
                                    if (arr[i]->id[j] != ID[j])
                                    {
                                        print = false;
                                        break;
                                    }
                                }

                                if (print == true)
                                {
                                    PrintDetails:
                                    printedNumber++;
                                    Print(i);
                                    break;
                                }
                            }
                        }

                        if (printedNumber == 0)
                        {
                            printf("Nie znaleziono szukanego studenta\n");
                        }
                        break;
                    }
                default:
                    {
                        printf("Bledny wybor, ponow komende");
                        goto Start;
                    }
            }


            system("PAUSE");
            goto Entrance;
        }
    case 0:
        {
            goto Close;
        }
    }


    goto Entrance;
Close: {
            for (int i = 0; i < 10; i++)
            {
                if(arr[i] != NULL)
                {
                    free(arr[i]);
                }
            }
       }
}