I want to write code like (0W ~4000000.000W) but my data filter no work.

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I made data type like this.

Unit : 1mW | Data Range 0W~ 4,000,000.000W Int32

I'll notice error message when data doesn't fit statement.

C++

double RountEx(double value_,int pos)
{
 
  double b= _Pow_int(10,pos);
  double temp= value_*_Pow_int(10,pos);
  temp=floor(temp-0.5);
  temp/=_Pow_int(10,pos);
  return temp;
}

//Edit control

void CheckData()
{  
  Edit_DischargePowerLimit.GetWindowTextA(strPowerData);
	
  double PowerData = _tstof(strPowerData);

  //if 3999999.999
  double Result=RountEx(PowerData,3);

  if((PowerData<= 0)&& (PowerData<=-4000000.000))
  {
   int IData= int(PowerData);
   }
  else if((PowerData<0) && (PowerData >= -4000000.000+0.001))
  {    
   AfxMessageBox("Over Range\n!");
   return;
  }

}

Posted 27-Feb-14 19:36pm

Sun-Mi Kang

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Orjan Westin · Accepted Answer · 2014-02-27T22:58:00

It's not clear from your code if your accepted range is (0 - 4000000) or (-4000000 - 0), but since you are talking about Watts I assume the former. In that case, your comparisons have a logic flaw:

C++

if((PowerData<= 0)&& (PowerData<=-4000000.000))

checks if the value is both less than zero and less than minus four million. You probably want to accept values that range from zero to four million, inclusive:

C++

if ((PowerData >= 0) && (PowerData <= 4000000.000))
{
    int IData= int(PowerData);
}
else
{    
    AfxMessageBox("Over Range\n!");
    return;
}

You don't need to have a condition on the else, since you already know the value is out of range.