c++ - vector size reverts to 0 outside constructor -

i have class [network] during construction creates vector of objects [nodes]

inside constructor have declaration

vector<node> nodes (nodecount); 

where nodecount int, lets 5

inside constructor can call

cout << nodes.size()  

and output 5

here constructor

network::network()  //establish initial node count network /* cout << "how many nodes: "; cin >> nodecount; */  nodecount = 5; vector<node> nodes (nodecount); cout << "nodes.size(): " << nodes.size() << endl;  //initialize tables nodes for(int = 0; < nodes.size(); i++) {     nodes[i].inittable(i, nodecount);     //cout << "nodes[" << << "].table[0] - " << nodes[i].table[0] << endl;   debug(); 

• pardon comments trying debug

but outside constructor if in function

void network::debug()  cout << "nodecount: " << nodecount << endl; cout << "nodes.size(): " << getsize() << endl; 

this output

nodecount: 5 nodes.size(): 0 

i cannot figure out life of me why happening

it seems within constructor defined local variable

vector<node> nodes (nodecount); 

that after exiting constructor destroyed.

you have use corresponding data member of class instead of local variable.