Variable not declared?

[SomeCodingNoob]

Just trying to write something to sum and average three numbers but it says "expected unqualified-id before '<<' token (line 13)" and 'a' was not declared in this scope (same for b and c) (lines 14 and 16), help please!

  #include <iostream>

using namespace std;

int add (double x, double y, double z)
{
    return x + y + z;
}

int main ()
{
    cout << "Enter three numbers:" << endl;
    double << a, b, c;
    cin >> a >> b >> b;

    cout << "The sum of your numbers is: " << add (a, b, c) << endl;
    cout << "The mean of your numbers is: " << add(a, b, c) / 3 << endl;

    return 0;
}

[Peter87]

Remove << from line 13.

[wildblue]

line 13 - do you mean to just declare the three variables a, b and c there? If yes, take out the << so it's just double a, b, c;


Edit: If you're allowing doubles to be entered into the add function, I'd change the return type to be double instead of int.

[SomeCodingNoob]

Thank you both!