cpp 4.17

4.17

#include<iostream>int main(){using namespace std;int nights = 1001;int*pt = new int;*pt = 1001;cout << "nights value = ";cout << nights << ": location " << &nights << endl;cout << "int ";cout << "Value = " << *pt << ": location = " << pt << endl;double*pd = new double;*pd = 10000001.0;cout << "double ";cout << "value = " << *pd << ": location = " << pd << endl;cout << "location of pointer pd: " << &pd << endl;cout << "size of pt = " << sizeof(pt);cout << ": size of *pt = " << sizeof(*pt) << endl;cout << "Size of pd = " << sizeof pd;cout << ": sizet of pd = " << sizeof(*pd) << endl;system("pause");return 0;}

4.18

#include<iostream>int main(){using namespace std;double*p3 = new double[3];p3[0] = 0.2;p3[1] = 0.5;p3[2] = 0.8;cout << "p3[1] is " << p3[1] << ".\n";p3 = p3 + 1;cout << "Now p3[0] is " << p3[0] << " and ";cout << "p3[1] is " << p3[1] << ".\n";p3 = p3 - 1;delete[] p3;system("pause");return 0;}