C++ 这里有一些错误

Question

谁能帮我解决这个问题？我是新来的。欢迎任何帮助!

9.3.cpp: In constructor ‘Address::Address(int,std::string.int.std::string,std::String,std::String)’: 9.3.cpp:29:51:error:’this’ cannot be used as function

9.3.cpp: In member function ‘int Address::compareTo(const Address&)’: 9.3.cpp:39:26:error:’std::string’has no member named ‘compareTo’

#include<iostream>
using namespace std;

class Address {
  int    houseNumber;
  string street;
  int    apartmentNumber;
  string city;
  string state;
  string zipCode; // e.g., "47405-1234"
  Address(int houseNumber, 
          string street, 
          // no apartmentNumber  
          string city, 
          string state, 
          string zipCode) { 
    this->houseNumber = houseNumber; 
    this->street = street; 
    this->city = city; 
    this->state = state; 
    this->zipCode = zipCode; 
  } 
  Address(int houseNumber, 
          string street, 
          int apartmentNumber, 
          string city, 
          string state, 
          string zipCode) { 
    this(houseNumber, street, city, state, zipCode);
    this->apartmentNumber = apartmentNumber; 
  } 
  void print(void) {
         std::cout << "Street: " << street << "\nCity: " 
             << city << "\nState: " << state << "\nPostal Code: " << zipCode;
}

  int compareTo(const Address &a) { 
    // same conventions as for Strings
    return this->zipCode.compareTo(angel); 
  }
};

Answer 1

这一行:

this(houseNumber, street, city, state, zipCode);

你不能调用自己的构造函数，至少不能这样。 C++11 标准中的新功能是使用初始化列表来完成此操作:

Address(int houseNumber, 
        string street, 
        int apartmentNumber, 
        string city, 
        string state, 
        string zipCode)
    : Address(houseNumber, street, city, state, zipCode)
{ 
    this->apartmentNumber = apartmentNumber;
}

如果您的编译器还不支持它，那么您必须从第一个构造函数复制代码，或者将公共(public)初始化放在一个单独的函数中，以便从两个构造函数调用。