摘要： ifstream作为函数的参数要加&参考：http://www.cnblogs.com/growup/archive/2011/03/03/1971528.htmlvoid foo(ifstream ifs) {} // 编译出错void foo(ifstream&ifs) {} // 编译成功原因：stream不能被复制实现方法：Make the copy constructor and assignment operator private (like inthe "ios" example - remember members are private 阅读全文