gbd says the segmentation fault is being generated in the insert
function.
//CONSTRUCTOR
tree():data(val ue_type()), left(0), right(0){};
tree(value_type vt, tree* l = 0, tree* r = 0):
data(vt), left(l), right(r) {};
//PRIVATE MEMBERS
value_type data;
tree *left;
tree *right;
//INSERT AND ADD NODE FUNCTIONS
tree::tree* tree::newNode(v alue_type new_data){
tree* node = new tree (data);
node->data = data;
node->left = 0;
node->right= 0;
return node;
}
tree::tree* tree::insert(tr ee* node, value_type new_data){
if (node == 0){
return(newNode( data));
}else
if(data <= node->data){
node->left = insert(node->left, data);
}else
node->right = insert(node->right, data);
return node;
}
//DRIVER
#include<iostre am>
#include "tree.h"
using namespace std;
using namespace abrowning_13;
int main(){
tree t1;
tree* tree_ptr;
int user_input;
while(cin.peek( ) != EOF){
t1.insert(tree_ ptr, user_input);
}
t1.inorder_prin t(tree_ptr);
return 0;
} 2 2181
andrew browning schrieb: gbd says the segmentation fault is being generated in the insert function.
//CONSTRUCTOR tree():data(val ue_type()), left(0), right(0){}; tree(value_type vt, tree* l = 0, tree* r = 0): data(vt), left(l), right(r) {};
//PRIVATE MEMBERS
value_type data;
tree *left;
tree *right;
//INSERT AND ADD NODE FUNCTIONS
tree::tree* tree::newNode(v alue_type new_data){ tree* node = new tree (data); node->data = data;
new_data, not data.
node->left = 0; node->right= 0; return node; }
tree::tree* tree::insert(tr ee* node, value_type new_data){ if (node == 0){ return(newNode( data));
new_data again.
}else
if(data <= node->data){ node->left = insert(node->left, data); }else node->right = insert(node->right, data); return node; }
The insert function ignores the class instance, it should be a static
function, as should newNode (which is completly useless, since new
tree(new_data) does the same).
//DRIVER
#include<iostre am> #include "tree.h" using namespace std; using namespace abrowning_13;
int main(){
tree t1; tree* tree_ptr; int user_input;
while(cin.peek( ) != EOF){ t1.insert(tree_ ptr, user_input);
You use uninitialized tree_ptr, that causes UB and yields to
segmentation fault.
Thomas
i fixed new_data and made it data to comply with the class instance.
i'm a little stuck, however on how to initialize tree_ptr... pointers
are a little arcane at this point. what do i initialize it to point to? This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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