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Avoid Memory Leak: Memory leaks occur when a program or application fails to release memory that is no longer being used. This can result in poor performance or application crashes. To avoid memory leaks, you should always release memory that is no longer being used using the free() function.

Keep track of allocated memory: To ensure that all allocated memory is released, it is important to keep track of all memory allocations and deallocations. This can be done by maintaining a list of allocated memory, which can be used to check whether all memory has been released.

Use appropriate data structure: It is important to select appropriate data structures to minimize memory usage in C. For example, using linked lists instead of arrays can reduce memory usage, as linked lists can grow and shrink dynamically as needed, whereas arrays require a fixed amount of memory.

Use efficient memory allocation techniques: C provides various memory allocation techniques like malloc(), calloc(), realloc() etc. Depending upon the size of memory blocks required to allocate, appropriate memory allocation techniques should be used to optimally utilize memory and avoid wastage of memory.

Always check for NULL pointers: Whenever memory is allocated dynamically, there is a chance of the allocation failing if there is not enough memory available. Therefore, it is important to check for NULL pointers after any allocation operation to ensure that memory has been successfully allocated.