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complex number to power

cash (100)
My program performs operations on complex numbers, however, I'm confused on how my exponent function can take only one complex number and take it to a power. I keep on getting an errror.
header
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#ifndef complex_1_hpp
#define complex_1_hpp

#include<iostream>
#include <stdio.h>
using namespace std;

class complex
{
public:
    void InputC(istream &in);
    void OutputC(ostream &out);
    complex AddC(complex x);
    complex SubC(complex x);
    complex MultC(complex x);
    complex DivC(complex x);
    complex ExpC(complex x, int n);// this function
private:
    float real, imag;
};

#endif /* complex_1_hpp */


driver
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#include<iostream>
#include "complex_1.hpp"

complex complex::AddC(complex x)
{
    complex temp;
    temp.real= real +x.real;
    temp.imag= imag + x.imag;
    return(temp);
}

complex complex::SubC(complex x)
{
    complex temp;
    temp.real= real -x.real;
    temp.imag= imag - x.imag;
    return(temp);
}

complex complex::MultC(complex x)
{
    complex temp;
    temp.real= (real * x.real)-(imag * x.imag);
    temp.imag= (imag * x.real)+(real * x.imag);
    return(temp);
}
complex complex::DivC(complex x)
{
    complex temp;
    temp.real = (real*x.real + imag*x.imag)/(x.real*x.real+x.imag*x.imag);
    temp.imag = (imag*x.real - real*x.imag)/(x.real*x.real + x.imag*x.imag);
    return(temp);
}
 complex complex:: ExpC ( complex x, int n)
 {
        for (int i=1; i<n; i++)
            x = MultC(x);
    return x;
 }
void complex:: InputC(istream &in)
{
    char i,paren,comma;
    in >> paren>> real>> comma>> imag >>i>> paren;
}

void complex:: OutputC(ostream &out)
{
    cout << '(' << real << ',' << imag << "i)" << endl;
}

implementation 
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#include <iostream>
#include "complex_1.hpp"
int main()
{
    char choice;
    complex a,b,c;
    int n;
    cout << endl;
    cout << "Enter a complex number pair such as (5.1,2.3i): ";
    a.InputC(cin);
    cout << "Enter a complex number pair such as (5.1,2.3i): ";
    b.InputC(cin);
    cout << "Enter a choice: (a)dd, (s)ub,(m)ult,(d)ivide, or (e)xponent: ";
    cin >> choice;
    switch (choice)
    {
        case 'a': c= a.AddC(b);
            
            break;
        case 's': c= a.SubC(b);
            
            break;
        case 'm': c= a.MultC(b);
            
            break;
        case 'd': c= a.DivC(b);
            
            break;
        case 'e' :
        cout << "Enter an integer for the compelx number to be taken a power to " << endl;
        cin >> n;
        c=a.ExpC(b,n); 

            break;
        default : cout << "Entry error";
    }
    cout << endl;
    cout << "Result is: ";
    c.OutputC(cout);
    cout << endl;
    return 0;
}
lastchance (6980)
MultC is a member function of a class, not a standalone function.

Did you mean
x = x.MultC( x, n);
on line 37 of what you have (mistakenly) called driver?

Also, the way you have set it up is very odd. Surely you would want to write
c=a.ExpC(n);
and not what you have on line 32 of what you (mistakenly) call implementation? Object a is effectively redundant there.
Last edited on
George P (5600)
I keep on getting an errror.

What is the error? Post it here, please.

If this is not a school assignment:

C++ has a complex number class and function templates for manipulating complex numbers in the <complex> header, including a function for raising to power: std::pow().

http://www.cplusplus.com/reference/complex/

http://www.cplusplus.com/reference/complex/pow/
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