I want compile the next file. The compilation successfully realises. But after loading created File.exe file and running the program there are showing error that “File.exe does not exist or it is not executable!“. What is the problem ?
I do not meet any problem with the files you uploaded.
Just make sure that the file File.exe exists and is an executable (as it should after the compilation of mgdraw.f, if successful) and is properly invoked in the Run tab of Flair (as it is in your flair file).