Please help with homework.

[FBHSIE]

Please help hint what to do. I have no idea how to fix these mistakes.

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[48T7M4Gy]

Make it easy for everybody and paste your complete code here using code tags <> from the menu on the right.

[integralfx]

#include <iostream>
#include <stdlib.h>

using namespace std;

//module prototype
void calculatesBmi(&double weight, &double height);

//Global constant
Const double KILOGRAM = 0.453592

int main()
{
    //some variables
    double weight
    double height

    cout << "Hello, today we are going to be calculating your BMI" << endl;
    cout << "Please type in your weight" << endl;
    cin >> weight;
    cout << "You typed in " << weight << endl;
    cout << "Please type in your height"
    cin << height;
    cout << "You typed in " << height << endl;
    cout << "Please give us a second to calculate your BMI." endl;
    calculatesBmi(weight, height);

    system("Pause");
}

http://www.cplusplus.com/doc/tutorial/functions/
http://en.cppreference.com/w/cpp/keyword
Also, you forgot to add a semi-colon in several lines.
Line 23: Wrong operator.