Pointers in C.

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Best documents for Pointers in C.
This document will make life easier for those who thinks "Pointer: A difficult Topic". 

https://docs.google.com/file/d/0Bz7eXe9Jx0skOWFkTW1CS2lEUWs/preview

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C++ Guidelines for Multithreaded System

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Mutithreading è Parallelism è  Achieve concurrency. Below are some of the guidelines to follow for building C++ Multithreaded system. Ø std::thread function arguments are pass by value by default. Thread function arguments are pass by value by default. So, if you want the change to be persisted in the arguments passed in , then pass them by reference using std::ref(). Ø Protect shared data or resource using critical section.     In a multithreaded environment if there are more than one thread sharing the resource/data then often it results in a undefined behaviour if the resource/shared data is not protected using synchronise mechanism. So, the shared resource/data must be protected with std::mutex . Ø Release lock after critical section. If a thread T1 acquires lock (mutex.lock()) before entering critical section and forgets to unlock(mutex.unlock()) then all the other threads will be blocked indefinitely and the program might hang because thread T1 gets hol
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Signalling System #7(SS7) Protocol.

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std::shared_ptr

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