Dynamically allocated memory must be freed manually

When using dynamic arrays in languages like C or C++, you typically allocate memory using functions like malloc or new, respectively. If this allocated memory is not explicitly freed, it remains allocated until the program terminates. This can potentially cause a memory leak, especially in long-running programs where memory usage accumulates over time.

In C, use free():

int *arr = (int *)malloc(sizeof(int) * 10);
free(arr); // explicitly freed the memory

In C++, use delete[]:

int *arr = new int[10];
delete[] arr; // explicitly freed the memory

In many other programming languages, memory management is handled automatically by a garbage collector. In such cases, you do not need to manually free memory, as the garbage collector reclaims unused memory for you (250131121405).