如何解决列出迭代器超出范围
| 我对ѭ0有问题。我有一个名为Contact的基类,以及三个派生类Friend,同事和熟人。派生类的每个实例都有某些字段,我可以在fill * Class * Details()函数中对其进行修改。问题是,当它到达push_back行时,我的程序给我一个错误,提示“ѭ1”。那会是什么呢?void Agenda::pushContact(string line,string temp)//function that adds a contact of type temp,containing the fields from line to the list
{
Contact *c;
if(temp==\"friend\") //the contact to add is of type friend
{
c = new Friend();
fillFriendDetails(c,line);//the details of Friend c will be filled
}
else if(temp==\"colleague\")
{
c = new Colleague();
fillColleagueDetails(c,line);//the details of Colleague c will be filled
}
else if(temp==\"acquaintance\")
{
c = new Acquaintance();
fillAcquaintanceDetails(c,line);//the details of Acquaintance c will be filled
}
contactList.push_back(c);
}
另外,contactList被定义为“ 3”。
编辑:这是定义联系人类(+派生的类)的方式:
class Contact
{
public:
string getFullName() { string fullName;fullName.append(firstName); fullName.append(\" \");fullName.append(lastName); return fullName;}
public:
void setFullName(string newFirstName,string newLastName) { firstName = newFirstName; lastName = newLastName;}
public:
string getFirstName() { return firstName;}
public:
void setFirstName(string newFirstName) {firstName = newFirstName;}
public:
string getLastName(){return lastName;}
public:
void setLastName(string newLastName){lastName = newLastName;}
public:
string getPhoneNo(){return phoneNo;}
public:
void setPhoneNo(string newPhoneNo) {phoneNo = newPhoneNo;}
public:
void setType(string newType){type=newType;}
public:
string getType(){return type;}
private:
string firstName;
string lastName;
string phoneNo;
string type;
//SubClass setters and getters
public:
virtual void setDateOfBirth(string birth) {}
virtual string getDateOfBirth() {return 0;}
virtual void setCity (string newCity) {}
virtual string getCity() {return 0;}
virtual void setFaculty (string newFaculty) {}
virtual string getFaculty() {return 0;}
virtual void setGroup (string newGroup) {}
virtual string getGroup() {return 0;}
virtual void setJob (string newJob) {}
virtual string getJob () {return 0;}
};
class Friend : public Contact
{
public:
void setDateOfBirth(string birth) {dateOfBirth=birth;}
public:
string getDateOfBirth() {return dateOfBirth;}
public:
void setCity (string newCity){city=newCity;}
public:
string getCity(){return city;}
private:
string dateOfBirth;
string city; //current city of residence
};
class Colleague : public Contact
{
public:
void setFaculty (string newFaculty){faculty = newFaculty;}
public:
string getFaculty(){return faculty;}
public:
void setGroup (string newGroup){group = newGroup;}
public:
string getGroup(){return group;}
private:
string faculty;
string group;
};
class Acquaintance : public Contact
{
public:
void setJob (string newJob){job=newJob;}
public:
string getJob (){return job;}
private:
string job;
};
解决方法
列表似乎在代码的其他位置被错误管理,因为该错误表明
end
是错误的。很可能是列表被删除/超出范围,或者对列表元素执行了一些不正确的“ 6”操作(例如使用无效的迭代器)。
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