我的代码中遇到“模糊的调用错误”，我无法检测到它我认为错误是在addressBookType类中，但我能够检测到它！
由于这些错误，我不得不重新发布这个问题？ “
Compiler: MinGW GCC 4.6.2 32-bit
Executing g++.exe...
g++.exe "D:\New Folder\Cpp\Assignment 4\q4\main.cpp" -o "D:\New Folder\Cpp\Assignment 4\q4\main.exe" -I"E:\Program Files\Dev-Cpp\MinGW32\include" -I"E:\Program Files\Dev-Cpp\MinGW32\include" -L"E:\Program Files\Dev-Cpp\MinGW32\lib" -L"E:\Program Files\Dev-Cpp\MinGW32\lib" -static-libstdc++ -static-libgcc
D:\New Folder\Cpp\Assignment 4\q4\main.cpp: In constructor 'addressBookType::addressBookType()':
D:\New Folder\Cpp\Assignment 4\q4\main.cpp:318:34: error: call of overloaded 'addressType()' is ambiguous
D:\New Folder\Cpp\Assignment 4\q4\main.cpp:318:34: note: candidates are:
D:\New Folder\Cpp\Assignment 4\q4\main.cpp:104:1: note: addressType::addressType(std::string, std::string, std::string, std::string)
D:\New Folder\Cpp\Assignment 4\q4\main.cpp:88:3: note: addressType::addressType()
D:\New Folder\Cpp\Assignment 4\q4\main.cpp:318:34: error: call of overloaded 'extPersonType()' is ambiguous
D:\New Folder\Cpp\Assignment 4\q4\main.cpp:318:34: note: candidates are:
D:\New Folder\Cpp\Assignment 4\q4\main.cpp:168:1: note: extPersonType::extPersonType(std::string, std::string)
D:\New Folder\Cpp\Assignment 4\q4\main.cpp:154:3: note: extPersonType::extPersonType()
Execution terminated
这是我的代码：
#include<iostream>
#include<cstdlib>
#include<fstream>
#include<string>
using namespace std;
//////////////////////////////"personType" is from D.S Malik Course Website
////////////***Class person Start
class personType
{
public:
void print() const;
//Function to output the first name and last name
//in the form firstName lastName.
void setName(string first, string last);
//Function to set firstName and lastName according
//to the parameters.
//Postcondition: firstName = first; lastName = last
string getFirstName() const;
//Function to return the first name.
//Postcondition: The value of firstName is returned.
string getLastName() const;
//Function to return the last name.
//Postcondition: The value of lastName is returned.
personType(string first, string last);
//Constructor
//Sets firstName and lastName according to the parameters.
//The default values of the parameters are null strings.
//Postcondition: firstName = first; lastName = last
private:
string firstName; //variable to store the first name
string lastName; //variable to store the last name
};
/////////Class person End***///////////
// IMPLEMENTATION OF "PersonType" CLASS //
///////////////// IMP START ////////////////////
personType::personType(string first="",string last=""){
}
void personType::setName(string first,string last){
firstName=first;
lastName=last;
}
string personType::getFirstName() const{
return firstName;
}
string personType::getLastName () const{
return lastName;
}
void personType::print() const{
cout<<firstName<<" "<<lastName<<endl;
}
////////////////// IMP END ////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////
////////***class addressType Start
class addressType{
private:
string stAddress;
string city;
string state;
string zipcode;
public:
addressType();
addressType(string,string,string,string);
void setAddress(string);
string getAddress();
void setCity(string);
string getCity();
void setState(string);
string getState();
void setZipcode(string);
string getZipcode();
};
// IMPLEMENTATION OF "addressType" CLASS //
///////////////// IMP START ////////////////////
addressType::addressType(string=" ",string=" ",string=" ",string=" "){
}
void addressType::setAddress(string addr){
stAddress=addr;
}
string addressType::getAddress(){
return stAddress;
}
void addressType::setCity(string cit){
city=cit;
}
string addressType::getCity(){
return city;
}
void addressType::setState(string sta){
state=sta;
}
string addressType::getState(){
return state;
}
void addressType::setZipcode(string zip){
zipcode=zip;
}
string addressType::getZipcode(){
return zipcode;
}
///////////////// IMP END ////////////////////
//////////class addressType End***
/////////////////////////////////
//////////////////////////////////
//////***class extPersonType Start
class extPersonType {
private:
string relation;
string phNo;
public:
extPersonType();
extPersonType(string,string);
void setRelation(string);
string getRelation();
void setphNo(string);
string getphNo();
};
// IMPLEMENTATION OF "extPersonType" CLASS //
///////////////// IMP START ////////////////////
extPersonType::extPersonType(string =" " ,string = " "){
}
void extPersonType::setRelation(string rel){
relation=rel;
}
string extPersonType::getRelation(){
return relation;
}
void extPersonType::setphNo(string ph){
phNo=ph;
}
string extPersonType::getphNo(){
return phNo;
}
///////////////// IMP END ////////////////////
//////////class extPersonType End***
///////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////"dateType" is from D.S Malik Course Website
////////***class DateType Start
class dateType
{
public:
void setDate(int month, int day, int year);
//Function to set the date.
//The member variables dMonth, dDay, and dYear are set
//according to the parameters.
//Postcondition: dMonth = month; dDay = day;
// dYear = year
int getDay() const;
//Function to return the day.
//Postcondition: The value of dDay is returned.
int getMonth() const;
//Function to return the month.
//Postcondition: The value of dMonth is returned.
int getYear() const;
//Function to return the year.
//Postcondition: The value of dYear is returned.
void printDate() const;
//Function to output the date in the form mm-dd-yyyy.
dateType(int month = 1, int day = 1, int year = 1900);
//Constructor to set the date
//The member variables dMonth, dDay, and dYear are set
//according to the parameters.
//Postcondition: dMonth = month; dDay = day; dYear = year;
// If no values are specified, the default
// values are used to initialize the member
// variables.
private:
int dMonth; //variable to store the month
int dDay; //variable to store the day
int dYear; //variable to store the year
};
//////////class dateType End***
/////////////////////////////////
// IMPLEMENTATION OF "DateType" CLASS //
///////////////// IMP START ////////////////////
void dateType::setDate(int month, int day, int year)
{
dMonth = month;
dDay = day;
dYear = year;
}
int dateType::getDay() const
{
return dDay;
}
int dateType::getMonth() const
{
return dMonth;
}
int dateType::getYear() const
{
return dYear;
}
void dateType::printDate() const
{
cout << dMonth << "-" << dDay << "-" << dYear;
}
//Constructor with parameters
dateType::dateType(int month, int day, int year)
{
dMonth = month;
dDay = day;
dYear = year;
}
//////////////// IMP END /////////////////////
////////////////////////////////////////////////////////////////////////////////
//////***class addressBookType Start
class addressBookType {
private:
string FirstName; //variable to store the first name
string LastName; //variable to store the last name
string StAddress;
string City;
string State;
string Zipcode;
string Relation;
string PhNo;
int DMonth; //variable to store the month
int DDay; //variable to store the day
int DYear; //variable to store the year
protected:
addressType obj1;
dateType obj2;
extPersonType obj3;
public:
addressBookType();
static int count;
void loadData(addressBookType *&ptr);
};
//////////class addressType End***
/////////////////////////////////
// IMPLEMENTATION OF "addressBookType" CLASS //
///////////////// IMP START ////////////////////
addressBookType::addressBookType(){
}
void addressBookType::loadData(addressBookType *&ptr){
ifstream fin;
ifstream fout;
string tempName;
cout<<"Enter file name:"<<endl;
if(!fin){
cout<<"Cannot open the image file : "<<endl;
cout<<"Input Failure"<<endl;
system("pause");
}
else{
for(int i=0;!fin.eof();i++){
fin>>FirstName;
fin>>LastName;
fin>>DDay;
fin>>DMonth;
fin>>DYear;
getline(fin,StAddress);
getline(fin,City);
getline(fin,State);
fin>>Zipcode;
fin>>PhNo;
fin>>Relation;
cout<<FirstName<<LastName<<DDay<<DMonth<<DYear<<StAddress<<City<<State<<Zipcode<<PhNo<<Relation<<endl;
}
}
}
int main (){
addressBookType *ptr;
addressBookType obj;
ptr=new addressBookType[500];
obj.loadData(ptr);
system("pause");
return(0);
}
~Please help
答案 0 :(得分：13)
这是问题所在：
addressType();
addressType(string,string,string,string);
...
addressType::addressType(string=" ",string=" ",string=" ",string=" "){
您正在声明两个构造函数，但第二个构造函数具有所有参数的默认值。因此，如果您调用addressType()，它可以是第一个无参数构造函数，也可以是第二个，所有参数都设置为默认值。
因为你似乎永远不会实现第一个构造函数，所以简单的解决方法就是删除声明。
答案 1 :(得分：4)
您已声明一个不带参数的构造函数和一个构造函数，其中所有参数都默认为null。当您调用构造函数并且不传递参数时，编译器不知道您是否需要无参数，或者您是否需要多参数，但是为所有参数传递了null。
答案 2 :(得分：1)
问题是你的addressType类中有2个冲突的构造函数：
addressType();
addressType(string,string,string,string);
您在定义中声明了第二个的默认值：
addressType::addressType(string=" ",string=" ",string=" ",string=" "){
}
你应该删除它们：
addressType::addressType(string,string,string,string){
}
答案 3 :(得分：0)
这两个函数原型无法区分：
addressType::addressType();
addressType::addressType(string=" ",string=" ",string=" ",string=" ");
通过默认构造函数创建addressType对象时（与extPersonType相同）
=" "表示法表示如果未明确提供参数，则使用=之后的值（也称为默认参数值）。因此，在这种情况下，对addressType()的调用可以是没有参数的函数，也可以是其所有参数都设置为" "的其他函数 - 编译器无法确定您的意思是哪一个并抛出一个错误。
要修复，请从（至少）第二个函数的第一个参数
中删除默认值