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Typecast 13 Years Ago by sdinu96 … as it is........so we have to TYPECAST on 17th line so how to typecast this and print the same output as… Re: Typecast 13 Years Ago by nbaztec This is plain stupid. 1. You don't wrap code in code tags 2. You double post. 3. What are you trying to achieve by assigning a (char*) an (int), which is illegal by the way 4. When you say 17th line did you expect me to count all the way when you didn't even bother to wrap this up in code tags? Your problem is still however not clear at all. Re: Typecast 13 Years Ago by abhimanipal What is the objective of your assignment ? Trying to typecast without if statements 15 Years Ago by VernonDozier … (object instanceof E) foo ((E) object); // typecast to type E else if (object instanceof F) foo… ((F) object); // typecast to type F else if (object instanceof G)… foo ((G) object); // typecast to type G else { // code to handle … Re: Trying to typecast without if statements 15 Years Ago by VernonDozier … your proposed solution) that there is no easy way to typecast in the situation I listed and if you don't… function the way it is? Is there no way to typecast in Java without hardcoding what you are type-casting to… Re: Trying to typecast without if statements 15 Years Ago by Alex Edwards … A> void doSomething(T type){ if(type instanceof [SpecialNeedClass]){ // typecast only for this type } // else if(...) // other specialized types else… why typecast malloc ? 12 Years Ago by tubby123 Hi, I don't understand why we typecast malloc. For example, while creating a string/character array, we … allocated memory. All that's cool, but why do we typecast it to char*. What is the default data type of… How to typecast this.............................. 13 Years Ago by sdinu96 { int i = 25789; char *p; .............. .............. printf("%d",*p); /* (*p) should give in printf*/ } dont assign p=i ............apart from this how we can typecast this program so that we can get interger value tp pointer p.............please help me this Re: How to typecast this.............................. 13 Years Ago by Ancient Dragon …*/ } dont assign p=i ............apart from this how we can typecast this program so that we can get interger value tp… function pointers typecast 13 Years Ago by DJSAN10 This is a part of code i read in a standard book.. f() {} . . . int *ip; ip=((int *)f); my question is..f gives d address of function..then wat is d need to typecast..??/ Re: function pointers typecast 13 Years Ago by DJSAN10 i thot tht ws quite implicit wat u said... newez sry fr nt putting it correclty... my doubt is simply whther is it necessary to perform d above typecast??? Re: function pointers typecast 13 Years Ago by Narue [QUOTE]wat is d need to typecast..??/[/QUOTE] First and foremost, function pointers and object pointers are … Managed C++ /CLI function CreateInstanceFromAndUnwrap typecast problem. 12 Years Ago by kaushik4study …->GetValue(obj,nullptr);[/CODE] In part 1 i cant typecast the object with the class name because it is in… Typecast reference 16 Years Ago by disc [code] class MyControl : public BaseControl { } class Base { proctected: BaseControl &mControl; } class MyClass : public Base { public: MyClass( MyControl &control ); void ReadControl(); } MyClass::MyClass( MyControl &control ) :Base(control) { } void MyClass::ReadControl( void ) { MyControl &control =… Re: Typecast reference 16 Years Ago by Ancient Dragon Make it a pointer instead of a reference. Re: Typecast reference 16 Years Ago by disc [quote=Ancient Dragon;466016]Make it a pointer instead of a reference.[/quote] Sorry but that is not an option... Re: Typecast reference 16 Years Ago by vijayan121 if MyControl is a polymorphic type: [code]// .... try { MyControl& control = dynamic_cast<(MyControl&>( mControl ) ; control.DoSomething(); } catch( const std::bad_cast& ) { // TODO: cast failed; handle it } // ...[/code] if not: [code]// .... MyControl& control = static_cast<(MyControl&>( mControl ) ; // … Re: Typecast reference 16 Years Ago by disc It was of the dynamic type ! vijayan121 thanks... typecast problem 11 Years Ago by James19142 I need a way to do a cast without being returned a pointer to a new address but, the same address as the original. Something like this: derivedClass something_derived; baseClass* basePointer = &something_dervived; derivedClass* derivedPointer = static_cast <derivedClass*> (basePointer); /* my problem… Re: typecast problem 11 Years Ago by deceptikon Are you using multiple inheritance? Off the top of my head I don't recall if the C++ standard requires the base and derived object address to be the same for single inheritance, but it simply *cannot* be for multiple inheritance. There's no way to organize the structure of the object to make that happen. If you're using single inheritance then my … Re: typecast problem 11 Years Ago by Ancient Dragon Are you trying to do something like this? class base { public: base() {x = 0;} protected: int x; }; class derived : public base { public: derived() {x = 1;} protected: int y; }; void foo(base* b) { derived* d = static_cast<derived*>(b); // <<<< … Re: typecast problem 11 Years Ago by James19142 @Ancient Dragon `derived* d = static_cast<derived*>(b); // <<<< this line` i need `d` to point to the same address as `b`, but `static_cast` returned a new address when i used it i need `base* b = /*derived*/d;` done backwards Re: typecast problem 11 Years Ago by James19142 @deceptikon i'm using single inheritance Re: typecast problem 11 Years Ago by Ancient Dragon I think you need to use dynamic_cast instead of static_cast. Read the requirements for derived_class[ here](http://msdn.microsoft.com/en-us/library/c36yw7x9(v=vs.80).aspx) and [here](http://www.informit.com/guides/content.aspx?g=cplusplus&seqNum=179) As indicated in the second link if you use virtual functions in base class you may not need … Re: typecast problem 11 Years Ago by mike_2000_17 > i need `base* b = /*derived*/d;` done backwards That is exactly what the `static_cast` does. Why do you assume that doing `base* b = d;` makes it so that `b` contains the same address value as `d`. In fact, there is no guarantee that it will. In a single inheritance scheme, it might be reasonable to expect that the address value isn't going … Re: typecast problem 11 Years Ago by James19142 After reading the replies I redid the code and realized that all the C++ cast functions do exactly what I needed them to do in this case. I messed up in the pointer trail by grabbing an address from an array of similar name for the cast's parameter, and then noticed the change of addresses, my bad about that, should've revised my code before … Re: Trying to typecast without if statements 15 Years Ago by Narue >Is there a better way? Yes, design the class hierarchy such that you don't need to know the dynamic type of the object. Perhaps some form of strategy pattern would clean up that selection code. Re: Trying to typecast without if statements 15 Years Ago by Alex Edwards [QUOTE=Narue;711723]>Is there a better way? Yes, design the class hierarchy such that you don't need to know the dynamic type of the object. Perhaps some form of strategy pattern would clean up that selection code.[/QUOTE] Would an Adapter be overkill? I.E. [code=java] public class AdaptedA<T extends A> extends A{ private T … Re: Trying to typecast without if statements 15 Years Ago by Ezzaral That still involves runtime instanceof checks. I would agree with Narue's suggestion. Re: Trying to typecast without if statements 15 Years Ago by Alex Edwards You could use a State Machine, or State Pattern based on how many times an object has been encountered, or the State of an object can depend on the type of object it encounters... It may simplify things, but only if you can work out the different possible states of objects. I think this is the closest thing to a solution to your problem, though …