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This was asked to me in an interview! i really got confused
How do I declare an array of N pointers to functions returning pointers to functions returning pointers to characters could anybody please help?
Started by benjamin button on
, 8 posts
by 8 people.
Answer Snippets (Read the full thread at stackoverflow):
N];
Divide big problem into smaller parts:
/* char_func_ptr is pointer to function returning pointer to char */ typedef char* (*char_func_ptr)(); /* func_func_ptr is a pointer to function returning cdecl> declare....
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I'm used to thinking of member functions as just being a special case of normal functions, where member functions have an extra parameter at the beginning of their parameter list for the 'this' pointer, that is, the object on which the member function...
Started by Joseph Garvin on
, 10 posts
by 10 people.
Answer Snippets (Read the full thread at stackoverflow):
Yes of a difference between a pointer-to-member function and a pointer-to-member variable than there ....
A pointer to a member function is not just a pointer to a function with an extra parameter.
Types.
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After reading this answer I thought I had a solution. At least the answer there is what I would like to do but I'm having a problem with the implementation.
here is an outline of what I am trying to do
typedef map<string, double*> myMap; typedef...
Started by HazyBlueDot on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
The object boost::bind(....) returns is some weird expression template { derived(T t):t(t) { } T t; }... .
To understand why this is needed, consider how boost::function into the boost::function object.
Not a function pointer.
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What are all operations supported by function pointer differs from raw pointer? Is > , < , <= , >=operators supported by raw pointers if so what is the use?
Started by yesraaj on
, 6 posts
by 6 people.
Answer Snippets (Read the full thread at stackoverflow):
Finally note that a pointer to a function pointer is not a function....
The result is the address stored in p.
These don't really make sense in the context of function pointers since they don't address.
pointer).
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I'm not talking about a pointer to an instance, I want a pointer to a class itself.
Started by Alex Gaynor on
, 11 posts
by 11 people.
Answer Snippets (Read the full thread at stackoverflow):
A type does not live in memory in the sense of a pointer....
If you simply want a pointer to a type then no there is not a way.
A class are trying to achieve.
A pointer is the address of something in the memory of the computer at run-time.
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What are the differences between normal function and function pointer. One which I know is in case you are using a library in your software stack which gives you only function pointers then you can fill in the pointers for use later.
Started by Sikandar on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Calling a function through a function....
It can be passed around like any other pointer, and can be invoked somewhere other than where it was created.
A function pointer is just a pointer to a normal function.
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Hi,
as its legal to convert a pointer to non-const to a pointer to a const.. similarly,why isnt it legal to convert (pointer to pointer to non-const) to a (pointer to pointer to a const) i.e,
char *s1 = 0; const char *s2 = s1; // OK... char *a[MAX]; /...
Started by ashishsony on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Of your question, see this entry from the comp.lang.c FAQ: Why can't I pass a char ** to a function.
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Hi,
I got error Access Violation when the following code is execute :
void NoAction() { (*m_psStateMachine[0][0])(); } class CXcp { public: CXcp(){} CXcp(WORD wXcpProtocol); ~CXcp(); private: void (*m_psStateMachine[10][16])(); public: // Action Methods...
Started by mahesh on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
PsStateMachine , which is declared as "array of array of pointer to function returning void":
private methods via the method pointer array, you'll have to tell the compiler which value to use pointer array with something along....
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This is the provided function template I'm trying to use:
template <class Process, class BTNode> void postorder(Process f, BTNode* node_ptr) { if (node_ptr != 0) { postorder( f, node_ptr->left() ); postorder( f, node_ptr->right() ); f( node...
Started by Robert Kuykendall on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
You should first call mem_fun to make a function....
You could pass be called this way:
f(arg);
You are passing in a pointer to member function.
function (think of it as a slot in the vtable), but you need a this pointer too.
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I don't know how to accomplish this! how to get the function pointer in va_list arguments? thanks so much.
Started by drigoSkalWalker on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Typedefs often make working with function pointers.
Use a typedef for the function pointer type.
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