Is is possible to create a variadic macro that adds an expression to all arguments? For example if I write

MACRO(int, a, b, c)

I want that it get replaced with

int a, int b, int c

If possible please a solution with no external libraries

Underlying problem:

I need parts of the code where a compile time type conversion happens.
Therefore I do something similar like this:

struct Index {
    Index(size_t i, size_t j) : iElem(i), iDof(j) {}
    size_t iElem;
    size_t iDof;
};

struct IndexOverride {
  explicit IndexOverride(Index index) : iElem(index.iElem), iDof(index.iDof) {}    
  size_t iElem;
  size_t iDof;
  size_t extra;
};

#define MACRO(index, FunctionBody) { auto test = [&](IndexOverride Index) { FunctionBody; }; test(static_cast<IndexOverride>(index)); }

Now I can specify with the macro specific regions where the type of some Index changes:

Index Index(2, 3);
std::cout << typeid(Index).name();

MACRO(Index, {
     std::cout << typeid(Index).name();
})

This will do it for one index. But now I want to extend the macro to multiple indices.Therefore I need add to all arguments IndexOveride and static_cast and insert in appropriate place