public async Task <IActionResult> Get(double temperatureValue, string oldTemperatureType, string currenTemperatureType) { var res = await _service.TemperatureConverter(temperatureValue, oldTemperatureType, currenTemperatureType); if (res == 0) { return(BadRequest("Temperature converter type cannot same")); } if (res == 1) { return(BadRequest("Temperature converter type cannot be null")); } if (res == 2) { return(BadRequest("Please select proper temperature converter type")); } return(Ok(res)); }