Histogram Interpolation

Hi, i’m new at programming and root. I wonder if someone could help me.
I have two TH1 histograms that I had to interpolate and now I have do know their point in common.
Is there anything I can do to discover it?

Thank you in advance.

I understand correctly you want the coordinates of the point at which these two lines cross.
If this is the case, a solution which does not imply programming is:
o draw the histos as you did
o Hit the view tab, tick the “show eventstatus bar” option
o position the cursor on the crossing
o look at the coordinates at the bottom of the canvas