CODEWITHSUNDEEP
c++templates
Seu
Seu

Reputation: 45

No instance of function template matches the specified type

I've read that could be a issue of IntelliSense, but I really don't know is it true or not. When I compile the code, I get an error (title) and don't know how to fix it. My book (Stephen Prata's "Sams C++ Primer Plus") doesn't answer to my problem. I've wrote a pretty similar program and the problem didn't appear.

Maybe the problem is in type specifier? Has it be the same as template's one? REALLY sorry for my language...

#include <iostream>

template <typename T>
T maxn(T tab[], int size);

template <> float maxn<float>(float, int); // Problem appears here...

int main()
{
    std::cin.get();
    return 0;
}

template <typename T>
T maxn(T tab[], int size)
{
    T max = tab[0];
    for (int i = 1; i < size; i++)
    {
        if (tab[i] > max) max = tab[i];
    }
}

I appreciate any suggestion. Thanks!

Upvotes: 1

Views: 8951

Answers (1)

cdhowie
cdhowie

Reputation: 168958

The first argument of the specialization is incorrect. You give float but according to the template it should be an array of floats.

template <> float maxn<float>(float[], int);
//                                 ^
// You need to indicate that the first parameter is an array.

Note that you do not declare a body for the specialization, so linking will fail if you attempt to use it. (Unless you are providing an implementation in another compilation unit.)

Upvotes: 3

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