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a practice session in preparation for a public performance (as of a play or speech or concert); "he missed too many rehearsals"; "a rehearsal will be held the day before the wedding"

a practice session in preparation for a public performance (as of a play or speech or concert); "he missed too many rehearsals"; "a rehearsal will be held the day before the wedding"

To execute a program by hand, writing values ofvariables and other run-time data on paper, in order to checkits operation and control flow or to track down a bug (aspart of debugging). A dry run is an extreme form of deskcheck or code review and is practical only for fairlysimple programs, small amounts of data and simple externalinterfaces. It was often performed off-line using ahardcopy of the source code.Dry runs were common practice in the days when access tocomputers was limited but the availability of screen editorsand fast compilers makes debugging by printf a moreproductive method in most cases. Sophisticated debuggersthat allow you to get the computer to step through your sourcecode line by line and show values of variables make even thisunnecessary.