#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>

#define N 15
//#define memory(n)=(char*)malloc(sizeof(char) * 100)
typedef struct
{
  char* university;
  char* faculty;
  char* group;
}dean;

typedef struct
{
  char* first_name;
  char* last_name;
  int age;
  char* city;
  dean ind;
}student;

int menu(student stu, dean indent)
{
  int choice = 0;
  int res = 0;
  printf("1. enter general information \n");
  printf("2. enter information for dean \n");
  printf("3. enter all information (not work)\n");
  printf("4. display all information (dont use)\n");
  printf("5. exit\n");
  printf("Input: ");
  scanf_s("%d", &choice);
  res = input(choice, stu, indent);
  return res;
}

int input(int choice, student stu, dean indent)
{
  int number = 0;

  if (choice == 1)
  {
    //printf("number of student: ");
    //scanf_s("%d", number);
    //student people[N];
    printf("Enter first name: ");
    stu.first_name = (char*)malloc(sizeof(char) * 100);
    gets(stu.first_name);
    getchar();
    printf("Enter last name: ");
    stu.last_name = (char*)malloc(sizeof(char) * 100);
    gets(stu.last_name);
    getchar();
    printf("Enter age: ");
    scanf_s("%d", &stu.age);
    getchar();
    printf("Enter city: ");
    stu.city = (char*)malloc(sizeof(char) * 100);
    gets(stu.city);
    printf("\n");
  }
  else if (choice == 2)
  {
    printf("Enter university: ");
    indent.university = (char*)malloc(sizeof(char) * 100);
    gets(indent.university);
    printf("Enter faculty: \n");
    indent.faculty = (char*)malloc(sizeof(char) * 100);
    gets(indent.faculty);
    printf("Enter group: \n");
    indent.group = (char*)malloc(sizeof(char) * 100);
    gets(indent.group);
  }
  else if (choice == 3)
  {

  }
  else if (choice == 4)
  {
    printf("first name:%s \t last name:%s \t age: %d \t city:%s \n", stu.first_name, stu.last_name, stu.age, stu.city);
    printf("university:%s \t faculty:%s \t group: %s \n ", indent.university, indent.faculty, indent.group);
  }
  else
  {
    choice = 0;
  }
  return choice;
}


int main(void)
{
  student stu = {"p", "p", 0, "p"};
  dean indent = {"p","p","p"};
  int beg = 1;
  while (beg > 0)
  {
    beg = menu(stu, indent);
  }
  system("pause");
  return 0;
}