c++ - 指向结构体的双指针

Question

我正在尝试使用指向结构的双指针。构建成功，但运行时出现以下错误:

Run-Time Check Failure #3 - The variable 'test2' is being used without being initialized.

代码是:

testStructure* test1 = (testStructure*)malloc(sizeof(testStructure));
testStructure** test2 ;
test1->Integer = 1;
test1->Double = 4.566;
*test2 = test1;

结构是:

typedef struct{
  int Integer;
  double Double;
} testStructure;

我哪里出错了？

Answer 1

*test2 = test1;   // test2 is pointing no where to get dereferenced.

必须

test2 = &test1;