C / C++ / MFC

tempf = fopen("myfile.txt", "r+");

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

class MyForm
{
private :
...
    int values [ 50 ] ;
    int value_count ;
public :
    MyForm () : value_count ( 0 )
    {
        ...
    }
    // add value to array
    void Btn1_Clicked(Object* sender, EventArgs* e)
    {
        if ( value_count < 50 )
        {
            values [ value_count ] = GetValueFromBox () ;
            ++value_count ;
        }
    }
    // calculate average
    void Btn2_Clicked(Object* sender, EventArgs* e)
    {
        int sum = 0 ;
        for ( int c = 0; c < value_count;  ++c )
        {
            sum += value [ c ] ;
        }
        SetValueInBox ( sum / value_count ) ;
    }
    ...
} ;

CComObjectGlobal<Connection> g_connection;