When to free memory inside a C code?

c, calloc, malloc, memory

Solution

Yes, they are equivalent. You do not have to call `free()` if allocation did not succeed. Pay attention, that `memory` is pointer to `int` and you have to dereference it to assign something to its memory block;

int* memory = NULL;
memory = malloc(sizeof(int));
if (memory)
    *memory=10;
free(memory);
memory = NULL;

Problem

When I alloc memory outside a while loop for example, is it okay to free it inside it ? Are these two codes equivalent ? ``` int* memory = NULL; memory = malloc(sizeof(int)); if (memory != NULL) { memory=10; free(memory); } int* memory = NULL; memory = malloc(sizeof(int)); if (memory != NULL) { memory=10; } free(memory); ```

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