CODEWITHSUNDEEP
cpointersstruct
user3717271
user3717271

Reputation: 57

Incompatible type when returning type in C for inner structure

I have a struct that I want to statically allocate at compile time but I'm not sure how to return a pointer to the inner structure. 

typedef struct
{
  int d;
} innerStruct;

typedef struct
{
  int a;
  int b;
  int c;
  innerStruct inner;

} myStruct;

static myStruct m1;

innerStruct * getMyStructPtr()
{
  myStruct * ptr = &m1;
  return ptr->inner;
}

int main()
{
  innerStruct * retval = getMyStructPtr();
  return 0;
}

Link to online compiler: https://onlinegdb.com/SJAFJCy0Z

Upvotes: 0

Views: 44

Answers (1)

Sourav Ghosh
Sourav Ghosh

Reputation: 134396

Check the data types!!

Your function promised to return a innerStruct *, whereas your code attempts to returns a innerStruct. They are neither same nor compatible. Fix either and use it appropriately.

Following the function call, it appears that you may want to write

 return &(ptr->inner);  // return type innerStruct *

Upvotes: 3

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