Simple code help

Hmm I'm trying to make a code to open a position in the opposite/same direction the last H1 candle closed, with preset TP and SL. I just can't get it right.

double dDiff = iClose(NULL,PERIOD_H1,1) - iOpen(NULL,PERIOD_H1,1);

I got this as candle close, but I don't know how to set it's direction, as in if it closed up go long, if it closed short go short.

Help with finishing this will be much appreciated.

If you ignore the lows and highs try something like this ?
Hope i understand you right.

if(iClose(NULL,PERIOD_H1,1) > iOpen(NULL,PERIOD_H1,1)) GoLong
if(iClose(NULL,PERIOD_H1,1) < iOpen(NULL,PERIOD_H1,1)) GoShort

Do you need a fixed minimum difference ?