标准输入输出流案例存文件
class Student{string name;string id;public:Student(string nam, string i):name(nam),id(i){}void SetName(string nam){name=nam;}void Student(string i){id=i;}string GetName() const{return name;}string GetId() const{return id;}};数据:"张三" "0100""李四" "0101"把类似的数据存到stu.txt中。用输入输出流来做,不是纯c!!!求关键代码