TH1D histogram half width at half maximum

Hello,

I’m new to root and have a question about TH1D histograms, and I was hoping you could help me. How do we get the half-width at half maximum for one or effectively for multiple histograms in a loop? Thank you. I appreciate the help.

https://root-forum.cern.ch/search?q=half%20width%20at%20half%20maximum