1 #include<iostream> 2 #include<fstream> 3 #include<string> 4 using namespace std; 5 6 struct SalaryInfo { 7 string id; 8 double salary; 9 }; 10 int main() { 11 SalaryInfo employee1 = { "S600",6000.0 }; 12 ofstream os("usersfile", ios_base::out | ios_base::binary);//usersfile在当前工作目录下，如果不存在则自动生成 13 os.write(reinterpret_cast<char*>(&employee1), sizeof(employee1)); 14 os.close(); 15 ifstream is("usersfile", ios_base::in | ios_base::binary); 16 if (is) { 17 SalaryInfo employee2; 18 is.read(reinterpret_cast<char*>(&employee2), sizeof(employee2)); 19 cout << employee2.id << " " << employee2.salary; 20 } 21 else 22 cout << "ERROR:Cannot open file 'usersfile'." << endl; 23 }