Segmentation fault

#1

#include
#include
#include
#include
using namespace std;
class node
{
public:
int data;
node* left;
node* right;
node(int d)
{
data=d;
left=NULL;
right=NULL;
}
};
void vertical_line(node* root,int d,map<int,vector > &m) //All the STL’s are passed by value therefore we have used the reference operator…
{
if (root=NULL)
{
return ;
}
m[d].push_back(root->data);
vertical_line(root->left,d-1,m);
vertical_line(root->right,d+1,m);
return;
}
node* buildnode()
{
node* root=new node(3);
node* left_root=new node(2);
node* right_root=new node(1);
root->left=left_root;
root->right=right_root;
node* leftofleft=new node(5);
node* rightofright=new node(6);
left_root->left=leftofleft;
right_root->right=rightofright;
return root;
}
int main()
{
map<int,vector > m;
node* wow=buildnode();
int d=0;
vertical_line(wow,d,m);
for(auto p : m)
{
cout<<p.first<<"–>";
for(int s : p.second)
{
cout<<s;
}
cout<<endl;
}
return 0;
}
please tell me the mistake I am commiting.

#2

Save your code on ide.codingblocks.com and then share its link.

#3

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