Question

每当我尝试初始化一个结构放在一个名为“meal”的数组中，该数组包含一个结构和一个整数时，它会给我以下错误：

.. \ meal_plan.c：92：5：警告：初始化器周围缺少大括号[-Wateing-braces]

.. \ meal_plan.c：92：5：警告:(接近初始化'fpi1.fs'）[-Wmissing-braces]

.. \ meal_plan.c：92：5：警告：初始化从指针生成整数而没有强制转换[默认启用]

.. \ meal_plan.c：92：5：警告:(接近初始化'fpi1.fs.name [0]'）[默认启用]

我不能为我的生活弄清楚什么是错的。我真的很感激有人对我失踪的看法。

  struct food_stuff
  {
      char name [30];
      int foodtype;
      int calories;
      int price;
  };

  typedef struct food_stuff food_stuff;

  struct food_plan_item
   {
      food_stuff fs;
      int qty;
  };

  typedef struct food_plan_item food_plan_item;

food_plan_item饭[50];

  void choose_food_item()
  {
      puts("Please select one of the available foods:");
      puts("-----------------------------------------");


      for(int i =  0;i <f_cnt;i++)
      {
          printf("\t(%d.) %s\n",i, (foodArray+i)->name);
      }
      puts("-----------------------------------------");
      fflush(stdout);

      char itemSelection [3];
      int chosenitem;

      gets(itemSelection);

      sscanf(itemSelection,"%d",&chosenitem);

      food_stuff *pfs;
      pfs = (foodArray+chosenitem);

      food_plan_item fpi1 = {pfs,1}; **(LINE 92)**

      add_food_plan_item(&fpi1);


  }

  void add_food_plan_item(food_plan_item *p_fpi)
  {

      meal[fpi_count] = *p_fpi;


      fpi_count++;
  }

Answer 1

您必须从pfs点复制到fpi1.fs;

food_plan_item fpi1 = {.qty = 1}; // designated initializer

memcpy(&fpi1.fs, pfs, sizeof(food_stuff));

或者您可以将fs的{{1}}成员声明为指针，然后直接指定指针：

food_plan_item

似乎可以在结构中传递一个结构，任何想法？

1 个答案: