Iterating over a struct in C++

Question

I have a structure

typedef struct A
{
    int a;
    int b;
    char * c;
}aA;

I want to iterate over each an every member of the structure

Answer 1

Perhaps you can string something together using Boost Fusion/Phoenix:

See it live on Coliru!

#include 
#include 
#include 
using boost::phoenix::arg_names::arg1;

#include 
#include 

struct A
{
    int a;
    int b;
    std::string c;
};

BOOST_FUSION_ADAPT_STRUCT(A, (int,a)(int,b)(std::string,c));

int main()
{
    const A obj = { 1, 42, "The Answer To LtUaE" };

    boost::fusion::for_each(obj, std::cout << arg1 << "\n");
}

Update: Recent versions of boost can use C++11 type deduction:

BOOST_FUSION_ADAPT_STRUCT(A,a,b,c);

Output:

1
42
The Answer To LtUaE