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The syntax of acatch clause resembles functions that take a single argument. The identifier (id1,id2, and so on) can be used inside the handler, just like a function argument, although you can omit the identifier if it’s not needed in the handler. The exception type usually gives you enough information to deal with it.. To use the memory checking system, you simply include the header fileMemCheck.h, link theMemCheck.obj file into your application, so that all the calls tonew anddelete are intercepted, and call the macroMEM_ON( ) (explained later in this section) to initiate memory tracing. A trace of all allocations and deallocations is printed to the standard output (viastdout). When you use this system, all calls tonew store information about the file and line where they were called. This is accomplished by using theplacement syntax foroperator new.[27] Although you typically use the placement syntax when you need to place objects at a specific point in memory, it also allows you to create anoperator new( ) with any number of arguments. This is used to advantage in the following example to store the results of the__FILE__ and__LINE__ macros whenevernew is called:..     testOutBounds();. 4.For C++, the most crucial problem is that theprintf( ) family of functions is not particularly extensible. They’re really designed to handle only the four basic data types in C (char,int,float,double,wchar_t,char*,wchar_t*, andvoid*) and their variations. You might think that every time you add a new class, you could add overloadedprintf( ) andscanf( ) functions (and their variants for files and strings), but remember, overloaded functions must have different types in their argument lists, and theprintf( ) family hides its type information in the format string and in the variable argument list. For a language such as C++, whose goal is to be able to easily add new data types, this is an ungainly restriction.. Tells you whethervalue appears in the sorted range[first, last).. The following example shows several ways this template can be expanded. First, we need a class that keeps track of its objects so we can know that it’s being properly destroyed:.. in whichpastEnd is the past-the-end marker produced by the container’send( ) member function.. #include. #include “Noisy.h”.   for(size_t i = 0; i< a.size(); ++i).   }.   assert(typeid(b2) == typeid(B2*));.   virtual float value() const = 0;. int main() {.         cout<< "Buttering toast "<< buttered<< endl;.