c++ - Problem on my binary tree class' nodes -


i'm trying code class binary tree representation. each node has value (key), index, , node* pointer parent(p), left-child(left) , right-child(right). problem on pointers. it's easier giving example problem explaining.

i coded print() function prints out each node in tree. here class header file. , here main test file.

the problem is, when call t.print(), prints 10, 5 , 7.

the problem you're using vector, internally (re-)allocates storage needed.

so, when pushing vector, whole internal data copied other memory location - making pointers still point old locations invalid.

an easy "fix" reserve amount of space vector, can @ least store amount of nodes in without re-allocation.

for example adding @ start of rootedtree constructors :

t.reserve(64);

note that not robust solution (if try put more 64 nodes in vector, you're still have same problem) - it'll confirm above analysis.


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