You need to do some reading to understand the basic concept of programs/process/thread and shared memory.

In a nut shell because you are using SHARED-memory it`s ok to use two programs. That is what SHARED memory is for.

-----Message d'origine-----
De : pooja chahal [mailto:community-noreply@qnx.com] 
Envoyé : Monday, November 05, 2012 7:06 AM
À : momentics-community
Objet : multiple definition of 'main ' error......

i am attaching my code they are not separate  programs but separate  processes , because i have to write and read from 
same memory llocation. There is only one  main in each process so y it is showing error,please suggest me some solution.

thanks in advance.... 



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Why don't you split the code to separate source code files?