vector的简单使用

#include <string>#include <iostream>#include <fstream>#include <vector>using namespace std;int main(){vector<string> v;ifstream in("c://a.txt");string line;while(getline(in, line)){v.push_back(line);//向vector中添加字符串 } in.close();//关闭输入流 for(int i = 0; i < v.size(); i++){cout<< i << ": " << v[i] << endl;//输出行号和每行的字符串 }system("pause");return 0;}