cpp 8.3

8.3

#include<iostream>int main(){using namespace std;int rats = 101;int & rodents = rats;cout << "rats = " << rats;cout << ", rodents = " << rodents << endl;cout << "rats address = " << &rats;cout << ", rodents address = " << &rodents << endl;int bunnies = 50;rodents = bunnies;cout << "bunnies = " << bunnies;cout << ", rats = " << rats;cout << ", rodents = " << rodents << endl;cout << "bunnies address = " << &bunnies;cout << ", rodents address = " << &rodents << endl;system("pause");return 0;}

8.4

#include<iostream>void swapr(int & a, int & b);void swapp(int*p, int*q);void swapv(int a, int b);int main(){using namespace std;int wallet1 = 300;int wallet2 = 350;cout << "wallet1 = $" << wallet1;cout << "wallet2 = $" << wallet2 << endl;cout << "Using references to swap comtents:\n";swapr(wallet1, wallet2);cout << "wallet1 = $" << wallet1;cout << "wallet2 = $" << wallet2 << endl;cout << "Using pointers to swap contents again:\n";swapp(&wallet1, &wallet2);cout << "wallet1 = $" << wallet1;cout << "wallet2 = $" << wallet2 << endl;cout << "Trying to use passing by value:\n";swapv(wallet1, wallet2);cout << "wallet1 = $" << wallet1;cout << "wallet2 = $" << wallet2 << endl;system("pause");return 0;}void swapr(int & a, int & b){int temp;temp = a;a = b;b = temp;}void swapp(int * p, int * q){int temp;temp = *p;*p = *q;*q = temp;}void swapv(int a, int b){int temp;temp = a;a = b;b = temp;}