The new and delete Operators
Native C++ classes support dynamic allocation and deallocation of objects by providing the new and delete operators. These operators allocate memory for objects from a pool called the free store. The new operator calls the special function operator new, and the delete operator calls the special function operator delete.
The new function in the Standard C++ Library supports the behavior specified in the C++ standard and throws a std::bad_alloc exception if memory allocation fails.
The C Runtime Library's new function throws a std::bad_alloc exception if memory allocation fails.
If you want to use the non-throwing version of new for the C Runtime Library, link your program together with nothrownew.obj. However, when you link with nothrownew.obj, new in the Standard C++ Library will no longer function.
For a list of the library files that contain the C Runtime Library and the Standard C++ Library, see C Run-Time Libraries.