vector 遍历及下标访问

vector 常规的遍历方法有以下方法：

1.for 遍历

vector<int> theVector;...vector<int>::iterator theIterator;for (theIterator = theVector.begin(); theIterator != theVector.end(); theIterator++)    {        cout << *theIterator;    }

2. for each 遍历

for each (ServerStatusListener* listener in m_serverStatusListenerList) {listener->OnCPSStatusChanged(cpsStatus);}

 

3.for 遍历，用下标

for (vector<int>::size_type ix = 0; ix != 10; ++ix)

 

鉴于第3种模式，可以采用下标的方式取得vector 中的值 

//vector 中有3条数据if (ipporttmp.size() == 3){vector<string>::size_type sindex=0;iptmp= ipporttmp[sindex];    //第一条数据port1 =atoi(ipporttmp[sindex +1].c_str());    //第二条数据port2 =atoi(ipporttmp[sindex +2].c_str());    //第三条数据}

4. for 遍历，使用size()

bool process(vector<int>& a){int sum = 0;for (int i = 0;i < a.size(); ++i){sum += a[i];}return sum > 100? true:false;}