计算方法中的复数程序编译时错误 [英] Complex number program compile-time error at calculation methods

问题描述

class Complex
{
public:
  Complex(float = 0.0, float = 0.0); //default constructor that uses default arg. in case no init. are in main
  void getComplex(); //get real and imaginary numbers from keyboard
  void sum(Complex, Complex); //method to add two complex numbers together
  void diff(Complex, Complex); //method to find the difference of two complex numbers
  void prod(Complex, Complex); //method to find the product of two complex numbers
  void square(Complex, Complex); //method to change each complex number to its square
  void printComplex(); //print sum, diff, prod, square and "a+bi" form 

private: 
  float real; //float data member for real number (to be entered in by user)
  float imaginary; //float data member for imaginary number (to be entered in by user)
};

Complex::Complex(float r, float i)
{   
  real = r;
  imaginary = i;
}

void Complex::sum(Complex r, Complex i)
{
  sum = r + i; //error here under "sum" and "+"
}

int main()
{
  Complex c;
  c.getComplex();
  c.sum(Complex r, Complex i); //error here under "Complex r"
  c.diff(Complex r, Complex i); //error here under "Complex r"
  c.prod(Complex r, Complex i); //error here under "Complex r"
  c.square(Complex r, Complex i); //error here under "Complex r"
  c.printComplex();

  return 0;
}

我完全不允许用户超载。

我相信我有几个错误，但是它们有一个共同的线程。它们出现在我方法中的计算点上。我不知道该如何解决。

I have several errors, but they have a common thread, I believe. They occur at the calculation points in my methods. I don't know how to fix it. I believe I have the public and private parts down, though.

这是我的错误：

错误7错误C2676：二进制 +：复杂未定义此运算符或未转换为预定义运算符可接受的类型c：cusers\Sarah\desktop\classwork\c ++ \考试3程序\考试3程序\考试3程序。cpp37

Error 7 error C2676: binary '+' : 'Complex' does not define this operator or a conversion to a type acceptable to the predefined operator c:\users\Sarah\desktop\classwork\c++\exam 3 program\exam 3 program\exam 3 program.cpp 37

错误16错误C3867：'Complex :: sum'：函数调用缺少参数列表；使用'& Complex :: sum'创建指向成员c的指针：用户，Sarah，桌面，类，c ++，exam 3程序，exam 3程序，exam 3程序。cpp58

Error 16 error C3867: 'Complex::sum': function call missing argument list; use '&Complex::sum' to create a pointer to member c:\users\Sarah\desktop\classwork\c++\exam 3 program\exam 3 program\exam 3 program.cpp 58

错误2错误C2784：'std :: _ St​​ring_const_iterator< _Elem，_Traits，_Alloc> std :: operator +（_ String_const_iterator< _Elem，_Traits，_Alloc> :: difference_type，std :: _ St​​ring_const_iterator< _Elem，_Traits，_Alloc>）' 'from'Complex'c：\users\Sarah\desktop\classwork\c ++ \exam 3 program\exam 3 program\exam 3 program.cpp 37

Error 2 error C2784: 'std::_String_const_iterator<_Elem,_Traits,_Alloc> std::operator +(_String_const_iterator<_Elem,_Traits,_Alloc>::difference_type,std::_String_const_iterator<_Elem,_Traits,_Alloc>)' : could not deduce template argument for 'std::_String_const_iterator<_Elem,_Traits,_Alloc>' from 'Complex' c:\users\Sarah\desktop\classwork\c++\exam 3 program\exam 3 program\exam 3 program.cpp 37

推荐答案

void Complex::sum(Complex r, Complex i)
{
    sum = r + i; //error here under "sum" and "+"
}

对两个复杂实例使用运算符 +。未定义。也未定义
变量和。
我可以猜到您想实现c = x + y或c.sum（x，y）。
然后，该函数应如下所示：real = x.real + y.real; this.img = x.img + y.img

you are trying to use operator '+' for two Complex instances. It is not defined. variable sum is not defined either. I can guess you wanted to implement c = x + y or c.sum(x,y). Then this function should look like this.real = x.real + y.real; this.img = x.img + y.img

同样，您不能在函数调用中定义变量，例如c.sum（Complex r，Complex i）;

Also you cannot define variables inside function call like this c.sum(Complex r, Complex i);

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