COS1512_EXAM_PACK

COS1512_EXAM_PACK JUNE 2017 P2 Page 1 of 6 1 C STRINGS Error Correction If(str!=”STOP” If(strcmp(str,”STOP”); Str = “STOP” Strcpy(str,”STOP”); 2 RECURSION Void CountDown(int num) { If (num = 0) Cout 0 endl; Else { Cout num endl; CountDown(num-1); } } 3 POINTERS 3.1 The problem with this this code fragment is that the code deletes the pointer. Thereafter, the programmer is assigning the value to a pointer that doesn’t point to anything. The results are disastrous. 3.2 Correct the Code 3.2.1 5 : p1 = &x; 6 : p2 = &y; 3.2.2 7: cout *p1 “ “ *p2; 3.2.3 9: 30 3.3 typedef int* myPtr; myPtr = a; int size’; a = new int[size]; 4 DEFINE PRODUCT CLASS Product.h #ifndef PRODUCT_H #define PRODUCT_H #include iostream #include cstdlib #include string #include fstream JUNE 2017 P2 using namespace std; class Product { public: Product(); ~Product(); long getNumber(); void reset(long rID, double rPrice, long rNum); void increaseRetailPrice(float incPercent); friend bool operator ==(const Product &p1, const Product &p2); friend Product operator -- (Product &P); friend istream& operator (istream& ins, Product &P); friend ostream& operator (ostream& outs, const Product &P); protected: private: long id; double price; long number; }; #endif // PRODUCT_H Product.CPP #include "Product.h" #include iostream #include cstdlib #include string