Most Common Mistake done/seen in C++ [duplicate]

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What C++ pitfalls should I avoid ?

What is the most common mistake in C/C++programming that you keep committing or see most of the people do? Being aware of it atleast subconsciously will increase my or anyone's chances of committing i开发者_JS百科t.

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Wrong memory management in all kinds of ways - new without delete, delete on the wrong pointer, unclear ownership of a pointer with resulting memory allocation / deallocation problems etc.