Acessing a struct member, using a pointer to a vector of structs. Error:base operand of '->' has non-pointer type

Posted by Matt Munson on Stack Overflow See other posts from Stack Overflow or by Matt Munson
Published on 2011-01-14T14:31:12Z Indexed on 2011/01/14 14:53 UTC
Read the original article Hit count: 145

Filed under:

pointers

|

vector

|

struct

|

access

|

member

#include <iostream>
#include <vector>

using namespace std;

struct s_Astruct {
    vector <int> z;
};


int main () 
{

    vector <s_Astruct> v_a;

    for(int q=0;q<10;q++)
    {
        v_a.push_back(s_Astruct());
        for(int w =0;w<5;w++)
            v_a[q].z.push_back(8);
    }

    vector <s_Astruct> * p_v_a = & v_a;
    cout << p_v_a[0]->z[4]; //error: base operand of '->' has non-pointer type 
                     //'__gnu_debug_def::vector<s_Astruct, std::allocator<s_Astruct> >'


}

There seems to be some issue with this sort of operation that I don't understand. In the code that I'm working on I actually have things like p_class->vector[]->vector[]->int; and I'm getting a similar error.

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