Using this
int i;
float f = 1.53;
i = Convert::ToInt32(f);
Will cause i = 2, because Convert::ToInt rounds to the nearest value. To force rounding down use:
i = Convert::ToInt32((int)f);
Feel free to comment if you can add help to this page or point out issues and solutions you have found. I do not provide support on this site, if you need help with a problem head over to stack overflow.