C++ Object-Oriented Programming 008: Super Simple Complex Number Class---- (Peking University Mooc)

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Original title

#include <iostream>
#include <cstring>
#include <cstdlib>
using namespace std;
class Complex {
    
    
private:
    double r,i;
public:
    void Print() {
    
    
        cout << r << "+" << i << "i" << endl;
    }
    
};
int main() {
    
    
    Complex a;
    a = "3+4i"; a.Print();
    a = "5+6i"; a.Print();
    return 0;
}

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Code

Complex(){
    
    }
    Complex(const char* a)
    {
    
    
        r = int(a[0]) - '0';
        i = int(a[2]) - '0';
    }