arraynew.cpp

来自「C++ Primer Plus（第五版）第4章例题代码」· C++ 代码 · 共 19 行

// arraynew.cpp -- using the new operator for arrays
#include <iostream>
int main()
{
    using namespace std;
    double * p3 = new double [3]; // space for 3 doubles
    p3[0] = 0.2;                  // treat p3 like an array name
    p3[1] = 0.5;
    p3[2] = 0.8;
    cout << "p3[1] is " << p3[1] << ".\n";
    p3 = p3 + 1;                  // increment the pointer
    cout << "Now p3[0] is " << p3[0] << " and ";
    cout << "p3[1] is " << p3[1] << ".\n";
    p3 = p3 - 1;                  // point back to beginning
    delete [] p3;                 // free the memory
    return 0; 
}