在struct中设置数组值会在struct中设置另一个字段

Question

I have a piece of code as follows, and when the line with comment (//error here) executes, it sets the status variable instead of the element in the array.

I moved the int status element above the array_name element in the struct definition and that seemed to have fixed it, I suspect that I am changing a pointer and am missing some parenthesis, but i am not sure why this was happening.

#define MAX_NUM 20
typedef struct FOO_T {
    bool abc;
    int id;
    int array_name[MAX_NUM];
    int counter;
    int status;
    SYSTEMTIME timestamp;

    struct FOO_T *next;
}

if (curr->array_name[code] == 0 )
{
    curr->counter++;
    curr->array_name[code] =  curr->counter; //error here
}

I also initialize the whole struct in a different function, part of that function is this:

thing->id = 0;
for (i = 0; i < MAX_NUM; i++) thing->array_name[i] = 0;
thing->counter = 0;
thing->status = 0;

Answer 1

You should check that code is less than MAX_NUM .

In your particular case code is probably MAX_NUM + 1