Ideas in this flowchart

• Release dynamically allocated memory when it is no longer needed
• The memory should no longer be needed before it is released
• Released memory can be reused by the program or the operating system
• The standard-library free() function deallocates the memory block
• Provide the pointer to free() as its argument
• Example: free(arr);
• Accessing memory through arr after it is freed is undefined behavior
• Such access may cause unexpected or fatal results