c - 在结构中使用结构..无法访问内部结构元素？

Question

嗨 friend ，我是新来的，正在尝试学习结构...这里我在结构计算中声明了结构日期...但不知道如何从日期访问元素。我通过使用 malloc 为父结构计算保留了内存。这对于日期结构也足够吗？ .请指导我...谢谢!

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

struct date{
   int day;
   int month;
   int year;
};

struct calc{
   int row;
   int col;
   char menu_name[20];
   char sub_menu_name[20];
   struct date dob;
};

int main()
{
    int count = 0, i;
    struct calc *my_calc[2];

   //here unable to understand that where i need to resever seprate memory for date?
   my_calc[0] = (struct calc *)malloc(sizeof(struct calc)); 

   //trying to asign the date value 
   for(count; count<2; count++)
   {   
       printf("Please enter day: ");    
       scanf("%d",&my_calc[count]->date.day);

       printf("Please enter month: ");    
       scanf("%d",&my_calc[count]->date.month);

       printf("Please enter Year: ");    
       scanf("%d",&my_calc[count]->date.year);
   }

   //trying to print the date value 
   printf("Day: %d\t  Month: %d\t   Year: %d\n ",my_calc[0]->date.day,my_calc[0]->date.month,my_calc[0]->date.year);

   system("PAUSE");

   return 0;
}

Answer 1

您声明的是dob而不是date。 &my_calc[count]->dob.day