I want to translate the following exiftool command to an Exiftool C++ code:

exiftool -RawThermalImage -b imageIn.jpg > imageOut.png

So far I have written the following:

ExifTool* imageIn = new ExifTool();
TagInfo* information = imageIn->ImageInfo(imageIn.jpg, "-RawThermalImage -b");

Therefore, I am just left with the > imageOut.png part.
But I am not able to figure out how to translate this.
Can someone guide me towards this. Thanks.