Convert const char * to int is invalid;

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C++11

here is code snippet i try to compile, which result to compile error:
convert const char * to int is invalid;

can anyone help debug this code ?
thanks in advance!

What I have tried:

#include <iostream>
#include <typeinfo>

using namespace std;
int sums() { return 0; }

template <typename Type, typename... T>
int sums(const Type s, const T... args)
{
    int res = 0;
    if (typeid(s) == typeid(int))
    {
        res += s;
    }
    else
    {
        cout << "not int" << s << endl;
    }
    res += sums(args...);
    return res;
}

int main()
{
    cout << sums(1,"sir", 4) << endl;
    return 0;
}