3-0-9.txt

思路很清晰的c++课件。例子很简明

class complex{
private:
	double real;
	double imag;
public:
	complex(double r=0.0,double i=0.0);	//有缺省值的构造函数
	double abscomplex();
};

complex::complex(double r,double i)
{	real=r; imag=i;	}

double complex::abscomplex()
{	double t;
	t=real*real+imag*imag;
	return sqrt(t);
}


main()
{	complex s1;		//不传递参数,全部用缺省值
	complex s2(1.1);	//只传递一个参数
	complex s3(1.1,2.2);	//传递两个参数
	//…
}