Best way to handle memory allocation in C?

Question

I think I\'ve got a good grasp on how to handle memory in C++ but doing it in C is different I\'m a bit off.

In C++ I\'ve got constructors and destructors, I\'ve got the

Answer 1

You may think that what I say is strange, but there is no big difference between C++ and C. C has RAII as well. RAII does not belong to C++ only.

Only thing you should have enough discipline to do management.

C++ class:

class foo {
public:
   ofstream ff;
   int x,y;
   foo(int _x) : x(_x),y(_x){ ff.open("log.txt"); }
   void bar() { ff< f(new foo);
   f->bar();
}

C object

typedef struct FOO {
    FILE *ff;
    int x,y;
} *foo_t;

foo_t foo_init(int x)
{
   foo_t p=NULL;
   p=malloc(sizeof(struct FOO)); // RAII
   if(!p) goto error_exit;
   p->x=x; p->y=x;
   p->ff=fopen("log.txt","w");   // RAII
   if(!p->ff) goto error_exit;
   return p;
error_exit:   // ON THROW
   if(p) free(p);
   return NULL;
}

void foo_close(foo_t p)
{
   if(p) fclose(p->ff);
   free(p);
}

void foo_bar(foo_t p)
{
   fprintf(p->ff,"%d\n",p->x+p->y);
}

int main()
{
  foo_t f=foo_init(1);
  if(!f) return 1;
  foo_bar(f);
  foo_close(f);
  return 0;
}