#include <cstdlib>

class Intpair {
  public:
    int a;
    int b;
    Intpair(int aval, int bval): a(aval),b(bval){}
    int sum(){return a+b;}
};

int baduse(){
    int s;
    Intpair *i = (Intpair*)malloc(sizeof(Intpair));   // Warning issued here:
                      // - 'Use of <stdlib.h> Allocator/Deallocator Macro' if malloc() implemented as a macro
                      // - 'Use of <stdlib.h> Allocator/Deallocator' if malloc() implemented as a function 
    if (i==NULL) {return 0;}
    i->a = 5;
    i->b = 7;
    s = i->sum();
    free(i);          // Warning issued here:
                      // - 'Use of <stdlib.h> Allocator/Deallocator Macro' if free() implemented as a macro
                      // - 'Use of <stdlib.h> Allocator/Deallocator' if free() implemented as a function 
    return s;
}

int gooduse(){                              // OK: uses constructor and destructor instead of malloc/free. 
    Intpair *i = new Intpair(5,7);                   
    int s =  i->sum();
    delete i;
    return s;

}