Question

I’m trying to create a template function that takes a vector argument of any type T (primitive for now) and prints out its contents:

template<class T>
void displayContents(const vector<T>& data)
{
    vector<T>::const_iterator i;
    i=data.begin();

    for( ; i!=data.end(); i++){
        cout<<*i<endl;
    }
}

The error message is:

In function ‘void displayContents(const std::vector >&)’:
error: expected ‘;’ before ‘i’ |
error:’i’ was not declared in this scope
=== Build finished: 2 errors, 0 warnings ===

Am I overlooking a syntax error?

Answer 1

Try the following:

  typename vector<T>::const_iterator i;

As pointed out by Björn in the comment already, it is needed because is a dependent name of the template.