CODEWITHSUNDEEP
c++templates
user1663533
user1663533

Reputation: 95

error: expected template-name before < token

Hello I am getting the following error 

templateatt.cpp:4:32: error: expected template-name before ‘<‘ token
templateatt.cpp:4:32: error: expected â{â before ‘<‘ token
templateatt.cpp:4:32: error: expected unqualified-id before ‘<‘ token

When I compile the following cpp file:

    #include<iostream>

    template <class R, class T>
    class mem_fun_t: unary_function<T*, R> {
      R (T::*pmf)();
    public:
      explicit mem_fun_t(R (T::*p)()):pmf(p){}
      R operator() (T *p) const { return (p->*pmf()); }
    };

    int main() {
      return 0;
    }

Any help will be great. I Am stuck at this.

Upvotes: 1

Views: 8296

Answers (1)

Joseph Mansfield
Joseph Mansfield

Reputation: 110658

Don't forget to #include <functional> to get unary_function and then qualify it with std::unary_function.

Upvotes: 7

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