Fortran has stoped working error

[Ershadinasab__Hadis]

Greeting, I have written a simple code and I am trying to use the common command in my code. Despite the fact that my code has no error or warning, It stops working when I execute the code. I would be so grateful if somebody who knows the implicit real and real*8 and common commands, could help me.

[mecej4]

It is perfectly normal for a program to run, do what it was designed to do, and then "stop working".

Please show the program source code and explain what observations lead you to think that something is wrong.