C Language Error: Request for member ' xxx ' in something not a structure or union

Today when compiling a C language program, for struct variables, report the error error:request for member ' xxx ' in something not a structure or union.

After debugging the discovery is. And so wrong.

If it is an address, just behind it with->, if it is not an address, it will be used behind it.

The code is abbreviated as follows:

#include <stdio.h>

#include <string.h>

typedef struct TEST_T

{

Char name[20];

int age;

}test_s;

void Test (test_s* mytest)

{

char* ptr = "Hello";

memcpy (Mytest->name, PTR, strlen (PTR)); MyTest is a struct pointer, so reference a variable using the struct pointer name, member variable name

Mytest->age = 20;

}

int main ()

{

test_s tt;

int ret = 0;

memset (TT, 0, sizeof (TT));

Test (&TT);

printf ("name:%s\n", tt.name); TT is a struct variable, so use "struct name. Member variable" to refer to a variable

printf ("age:%d\n", tt.age);

return ret;

}

C Language Error: Request for member ' xxx ' in something not a structure or union