warn_implicitconv

Controls the issuing of warnings for all implicit arithmetic conversions.

  #pragma warn_implicitconv on | off | reset  

If you enable this pragma, the compiler issues a warning for all implicit arithmetic conversions when the destination type might not represent the source value. The following listing provides an example.

#pragma warn_implicitconv on

float f;



signed int si;



unsigned int ui;



int main()



{



    f  = si;    // OK



    si = f;     // WARNING



    ui = si;    // WARNING



    si = ui;    // WARNING



}

The default setting for warn_impl_i2fconf pragma is disabled. Use the warn_implicitconv pragma along with the warn_impl_i2f_conv pragma to generate the warning for the int-to-float conversion.

This pragma corresponds to the Implicit Arithmetic Conversions setting in the Language panel. To check this setting, use __option (warn_implicitconv), described in Checking Pragma Settings. By default, this pragma is disabled.