Did King Louis and antionette have children were they executed or did they escape?

They had several children.

Their eldest child Marie Therese Charlotte was imprisoned, but after the revolution was allowed to escape and ended up marrying her cousin

Their eldest son Louis-Joseph died shortly before the revolution began of tuberculous

their daughter Sophie died when she was a year old several years before the revolution

Louis-Charles Duke of Normandy was imprisoned with his parents and sister. He however was had a different experience. After his father died he was removed from his mother and was to be reeducated to be a good revolutionary. He was given a tutor who treated him like a slave and used him to get testimony to convict his mother with. After that was done they left him in a tiny room to basically rot. They fed him, but was not allowed out of a room with no light. His clothing was not changed for about a year and there was no place to do his business. Shortly after Robespierre died he died in the Temple Prison.