Detecting memory leaks in C programs?

Question

If we would like to check for memory leaks in a C++ program, we can overload the new and delete operators to keep track of the memory that was allocate

Answer 1

Valgrind is what you need.

I remember reading first chapter of Algorithms in a Nutshell which talked about this although it didn't include code. Just added in case you find it interesting.

since there is no operator overloading in c can we over-write malloc function point to intercept calls to malloc and track memory allocation

Actually, you can. GIve LD_PRELOAD a read.