如何为结构体中的指针所指向的数组元素插入值

Question

I currently have a struct that contains a pointer to an array of pointers. I am trying to give a value to an element in the array of pointers, but I get a segmentation fault.

aStruct->anArray[0]->string = test;

aStruct contains a char** anArray and char *string. char *test = "test".

When I try to do what I did, I get a segmentation fault. Is that command not valid?

struct aStruct
{
   char **anArray;
};

I used calloc to make an array of size 10.

Answer 1

 aStruct->anArray[0]->string = test; 

aStruct contains a char** anArray and char *string. char *test = "test".

Is that command not valid?

Certainly not. aStruct->anArray[0] would be char* and wouldn't have a member ->string .

Other than that, if it really compiles and you only posted the wrong code, you wouldn't get a segmentation fault if anArray was properly allocated and had the right size. So you need something like this in your program:

aStruct->anArray = malloc(size * sizeof(*aStruct->anArray));

where size is at least one for your case, but generally the number of elements you ever need to access.