Re: deleting dynamically allocated objects in a container

I get compilation error for this 'transform' call. Here is the
complete modified program z.cpp:

#include <cstdlib>
#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

class Test
{
public:
        explicit Test(int arg = 0);
        ~Test();
private:
        int val;
};

inline Test::Test(int arg) : val(arg)
{
        cout << "From Test ctor: " << val << endl;
}

inline Test::~Test()
{
        cout << "From Test dtor: " << val << endl;
}

template <typename T>
T* delete_ptr(T* p)
{
        delete p;

        return 0;
}

int main()
{
        typedef vector<Test*> Container;
        Container c;
        c.push_back(new Test(100));
        c.push_back(new Test(200));
        c.push_back(new Test(300));
        transform(c.begin(), c.end(), c.begin(), &delete_ptr);
        // just to ensure the element values are zero, print them
        cout << c[0] << " " << c[1] << " " << c[2] << endl;

        return EXIT_SUCCESS;
}

I compiled this program with g++3.4.3 as
g++ -std=c++98 -pedantic -Wall -Wextra z.cpp

It generated the following compilation error:

z.cpp: In function `int main()':
z.cpp:42: error: no matching function for call to
`transform(__gnu_cxx::__normal_iterator<Test**, std::vector<Test*,
std::allocator<Test*> > >, __gnu_cxx::__normal_iterator<Test**,
std::vector<Test*, std::allocator<Test*> > >,
__gnu_cxx::__normal_iterator<Test**, std::vector<Test*,
std::allocator<Test*> > >, <unknown type>)'

Kindly help me to make this modified program compile fine and produce
the expected result which I stated at the beginning of OP.