#include <stdio.h> #include <iostream> #include <fstream> using namespace std; int main() { ifstream in; in.open("b.cpp"); string temp; while (getline(in, temp)) { cout << temp << endl; } in.clear(); in.seekg(0, ios::beg); while (getline(in, temp)) { cout << temp << endl; } return 0; }
要注意clear函数的使用！
