初学者提问，关于c++中class的问题

Question

#include using namespace std;enum Type{HOME, OFFICE, FAX, CELL, PAGER};class PhoneNum{public: PhoneNum() { country_code = 0; area_code = 0; num = 0; type = HOME; } PhoneNum(int, int, int, Type); PhoneNum(int, Type); int GetCountryCode() const; int GetAreaCode() const; int GetPhoneNum() const; Type GetType() const; void SetCountryCode(int); void SetAreaCode(int); void SetPhoneNum(int); void SetType(Type); bool Equal(PhoneNum);private: int country_code; int area_code; int num; Type type;};PhoneNum :: PhoneNum(int a, int b, int c, Type t){ a = country_code; b = area_code; c = num; type = t;}PhoneNum :: PhoneNum(int d, Type t1){ num = d; type = t1; country_code = 86; area_code = 20;}int PhoneNum :: GetCountryCode()const{ return country_code;}int PhoneNum :: GetAreaCode() const{ return area_code;}int PhoneNum :: GetPhoneNum()const{ return num;}Type PhoneNum ::GetType()const{ return type;}void PhoneNum ::SetCountryCode(int f){ country_code = f;}void PhoneNum ::SetAreaCode(int g){ area_code = g;}void PhoneNum ::SetPhoneNum(int h){ num = h;}void PhoneNum ::SetType(Type t3){ type = t3;}bool PhoneNum ::Equal(PhoneNum n) { return((country_code == n.country_code) && (area_code == n.area_code) && (num == n.num) && (type == n.type));}
找不出代码问题，可提交了总是答案错误，求大神

Answer 1

4处错误：

 ComplexNum :: ComplexNum(double a, double b)
{
    real = a;//修改
    imag = b;//修改
}

void ComplexNum :: divide(ComplexNum c4)
{
    double c = real;
    double d = imag;
    real = (c * c4.real + d * c4.imag) / (c4.real * c4.real + c4.imag * c4.imag);//修改
    imag = (d * c4.real - c * c4.imag) / (c4.real * c4.real + c4.imag * c4.imag);//修改
}