C++Talk.NET C++ language newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  error in compiling c++ program.          C++Talk.NET Forum Index -> C++ language (comp.lang.c++) View previous topic :: View next topic   Author Message sharat Guest Posted: Fri Oct 13, 2006 9:10 am    Post subject: error in compiling c++ program. hi.. In the following c++ program for tree(binary search .) while compiling i m getting the following error . program is : btree.cpp class btree { public: struct node { node *left; char data; node *right; } *root; char *arr; int *lc; int *rc; public: btree(char *a, int *l, int *r, int size); void insert(int index); static node* buildtree(char *a, int *l, int *r, int index); void display(); static void inorder(node *sr); ~btree(); static void del(node *sr); }; node* btree :: buildtree(char *a, int *l, int *r, int index) { node *temp = NULL; if(index != -1) { temp = new node; temp->left = buildtree(a, l, r, *(l + index)); temp->data = *(a + index); temp->right = buildtree(a, l, r, *(r + index)); } return temp; } # g++ btree.cpp btree.cpp:54: error: expected constructor, destructor, or type conversion before '*' token. can any one plz help to sort it out. Back to top sunderjs Guest Posted: Fri Oct 13, 2006 9:10 am    Post subject: Re: error in compiling c++ program. Code presented here seems incomplete. I don't see any line:54. Copy the full code again !! sharat wrote: Quote: hi.. In the following c++ program for tree(binary search .) while compiling i m getting the following error . program is : btree.cpp class btree { public: struct node { node *left; char data; node *right; } *root; char *arr; int *lc; int *rc; public: btree(char *a, int *l, int *r, int size); void insert(int index); static node* buildtree(char *a, int *l, int *r, int index); void display(); static void inorder(node *sr); ~btree(); static void del(node *sr); }; node* btree :: buildtree(char *a, int *l, int *r, int index) { node *temp = NULL; if(index != -1) { temp = new node; temp->left = buildtree(a, l, r, *(l + index)); temp->data = *(a + index); temp->right = buildtree(a, l, r, *(r + index)); } return temp; } # g++ btree.cpp btree.cpp:54: error: expected constructor, destructor, or type conversion before '*' token. can any one plz help to sort it out. Back to top David Harmon Guest Posted: Fri Oct 13, 2006 9:10 am    Post subject: Re: error in compiling c++ program. On 12 Oct 2006 22:55:24 -0700 in comp.lang.c++, "sharat" <aaliya.zarrin (AT) gmail (DOT) com> wrote, Quote: # g++ btree.cpp btree.cpp:54: error: expected constructor, destructor, or type conversion before '*' token. can any one plz help to sort it out. The compiler says the error is on line 54. There are less than 50 lines in the fragment you posted. How can anybody help? Where is line 54? node* is unknown outside the context of class btree. Its name elsewhere is btree::node* Back to top Kai-Uwe Bux Guest Posted: Fri Oct 13, 2006 9:10 am    Post subject: Re: error in compiling c++ program. sharat wrote: Quote: hi.. In the following c++ program for tree(binary search .) while compiling i m getting the following error . program is : btree.cpp class btree { public: struct node { node *left; char data; node *right; } *root; char *arr; int *lc; int *rc; public: btree(char *a, int *l, int *r, int size); void insert(int index); static node* buildtree(char *a, int *l, int *r, int index); void display(); static void inorder(node *sr); ~btree(); static void del(node *sr); }; node* btree :: buildtree(char *a, int *l, int *r, int index) btree::node* btree :: buildtree(char *a, int *l, int *r, int index) Quote: { node *temp = NULL; if(index != -1) { temp = new node; temp->left = buildtree(a, l, r, *(l + index)); temp->data = *(a + index); temp->right = buildtree(a, l, r, *(r + index)); } return temp; } Best Kai-Uwe Bux Back to top Amol Guest Posted: Fri Oct 13, 2006 9:10 am    Post subject: Re: error in compiling c++ program. sharat wrote: Quote: hi.. Why don't you provide constructor for the 'node'? and please provide the line number from where you are getting the error. Try this one: Quote: class btree { struct node { char data; node *left; node *right; node(char d = '\0', node* ll = 0, node* rr = 0) : data(d), left(ll), right(rr) {} Quote: } *root; char *arr; int *lc; int *rc; public: btree(char *a, int *l, int *r, int size); void insert(int index); static node* buildtree(char *a, int *l, int *r, int index); void display(); static void inorder(node *sr); ~btree(); static void del(node *sr); }; node* btree::buildtree(const char *a, const int *l, const int *r, int index) { if (index != -1) { node* temp = new node(*(a + index)); temp->left = buildtree(a, l, r, *(l + index)); temp->right = buildtree(a, l, r, *(r + index)); return temp; } return 0; } Well I hope this will provide some help to you. Back to top Salt_Peter Guest Posted: Fri Oct 13, 2006 9:10 am    Post subject: Re: error in compiling c++ program. sharat wrote: Quote: hi.. In the following c++ program for tree(binary search .) while compiling i m getting the following error . program is : btree.cpp class btree { public: struct node { node *left; char data; node *right; } *root; char *arr; int *lc; int *rc; public: btree(char *a, int *l, int *r, int size); void insert(int index); static node* buildtree(char *a, int *l, int *r, int index); void display(); static void inorder(node *sr); ~btree(); static void del(node *sr); }; node* btree :: buildtree(char *a, int *l, int *r, int index) { node *temp = NULL; if(index != -1) { temp = new node; temp->left = buildtree(a, l, r, *(l + index)); temp->data = *(a + index); temp->right = buildtree(a, l, r, *(r + index)); } return temp; } # g++ btree.cpp btree.cpp:54: error: expected constructor, destructor, or type conversion before '*' token. can any one plz help to sort it out. a static member function can't access non-static members of a class. It can only access globals and static members. 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