Friend Class(question)
i want to use friend class but when i try i take these errors pls help me:S i am sure i am not using frien function correctly but didnt solved:(
Error 1 error C2143: syntax error : missing ';' before '<' c:\users\tess\documents\visual studio 2010\projects\deneme\deneme\simspace.h 8
Error 2 error C2433: 'SimSpace' : 'friend' not permitted on data declarations c:\users\tess\documents\visual studio 2010\projects\deneme\deneme\simspace.h 8
Error 3 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int c:\users\tess\documents\visual studio 2010\projects\deneme\deneme\simspace.h 8
Error 4 error C2238: unexpected token(s) preceding ';' c:\users\tess\documents\visual studio 2010\projects\deneme\deneme\simspace.h 8
Error 5 error C2143: syntax error : missing ';' before '<' c:\users\tess\documents\visual studio 2010\projects\deneme\deneme\simspace.h 29
Error 6 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int c:\users\tess\documents\visual studio 2010\projects\deneme\deneme\simspace.h 29
Error 7 error C2086: 'int SimSpace' : redefinition c:\users\tess\documents\visual studio 2010\projects\deneme\deneme\simspace.h 29
Error 8 error C2988: unrecognizable template declaration/definition c:\users\tess\documents\visual studio 2010\projects\deneme\deneme\simspace.h 29
Error 9 error C2059: syntax error : '<' c:\users\tess\documents\visual studio 2010\projects\deneme\deneme\simspace.h 29
Error 10 error C2039: 'Allocate' : is not a member of '`global namespace'' c:\users\tess\documents\visual studio 2010\projects\deneme\deneme\simspace.h 40
Error 11 error C2143: syntax error : missing ';' before '{' 41
Error 12 error C2447: '{' : missing function header (old-style formal
Error 13 error C2143: syntax error : missing ';' before '<'
Error 14 error C2182: 'SimSpace' : illegal use of type 'void'
Error 15 error C2086: 'int SimSpace' : redefinition
Error 16 error C2988: unrecognizable template declaration/definition
Error 17 error C2059: syntax error : '<'
Error 18 error C2039: 'Deallocate' : is not a member of '`global namespace' |
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#include <iostream>
using namespace std;
template<class T>
class SimNode
{
friend SimSpace<T>;
private:
T data;
int link;
};
template<class T>
class SimSpace
{
public:
SimSpace(int MaxSpaceSize=100);
~SimSpace(){delete[]node;}
int Allocate();
void Deallocate(int& i);
private:
int NumberOfNodes;
int first;
SimNode<T> *node;
};
template <class T>
SimSpace<T>::SimSpace(int MaxSpaceSize)
{
NumberOfNodes = MaxSpaceSize;
node = new SimNode<T> [NumberOfNodes];
for(int i=0; i<NumberOfNOdes-1; i++)
node[i].link = i+1;
node[NumberOfNodes-1].link = -1;
first = 0;
}
template<class T>
int SimSpace<T>::Allocate()
{
if(first == -1) throw NoMem();
int i= first;
first = node[i].link;
return i;
}
template<class T>
void SimSpace<T>:: Deallocate(int& i)
{
node[i].link = first;
first = i;
i= -1;
}
|
Try this:
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//...
template <class T>
class SimSpace;
template<class T>
class SimNode
{
friend class SimSpace<T>;
private:
T data;
int link;
};
//...
|
thanks it works ;)
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