C++内存分配
分配连续的内存
// operator new[] example
#include <iostream> // std::cout
#include <new> // ::operator new[]
struct MyClass {
int data;
MyClass() {std::cout << '*';} // print an asterisk for each construction
};
int main () {
std::cout << "constructions (1): ";
// allocates and constructs five objects:
MyClass * p1 = new MyClass[5];
std::cout << '\n';
std::cout << "constructions (2): ";
// allocates and constructs five objects (nothrow):
MyClass * p2 = new (std::nothrow) MyClass[5];
std::cout << '\n';
delete[] p2;
delete[] p1;
return 0;
}