C++: How to use type in template function to branch?

I am not quite proficient with templates. How do I write the a template function called get that chooses the array it gets from based on the template type? See the example below:

struct Foo
{
    int iArr[10];
    char cArr[10];

    // How to pick array here based on template type?
    template < typename T >
    T get( int idx )
    {
        // This does NOT work!
        switch ( T )
        {
        case int:
            return iArr[ idx ];
        case char:
            return cArr[ idx ];
        }
    }
};

// Expected behaviour of get()
Foo foo;
int i  = foo.get< int >( 2 );
char c = foo.get< char >( 4 );