Re: compilation error related to template parameter

 Premal <>
Tue, 14 Aug 2007 01:02:06 -0700
On Aug 14, 11:02 am, ", India"
<> wrote:

Consider the following program:

#include <iostream>
#include <string>
#include <vector>

using namespace std;

template<class T> class Vec : public vector<T>
Vec() : vector<T>() { }

Vec(int s) : vector<T>(s) { }

T& operator[] (int i) { return at(i); }


int main()
      Vec<string> s(3);

       return 0;


Suppose this program is named as y.cpp

When this program is compiled under Redhat Enterprise Linux
Workstation, as
g++ -std=c++98 -pedantic -Wall -Wextra y.cpp

I am getting the following compilation error:

y.cpp: In member function `T& Vec<T>::operator[](int)':
y.cpp:14: error: there are no arguments to `at' that depend on a
template parameter, so a declaration of `at' must be available

However under VC++ Express Edition 2005, it compiles well without any
warning or error.

Kindly explain what is wrong with the above program and help me in
fixing the compilation error with g++ under Linux

you can try following one:
rather than using return at(i) use the following one:
return vector<T>::at(i)

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