Re: Leak or Crash. Don't understand why

From:

Luk Jack <jlluckie7156468@gmail.com>

Newsgroups:

microsoft.public.vc.language

Date:

Thu, 10 Jun 2010 08:11:29 -0700 (PDT)

Message-ID:

<5c88f108-45c6-46cb-b658-2b9c33b28485@a39g2000prb.googlegroups.com>

On 6=E6=9C=8810=E6=97=A5, =E4=B8=8B=E5=8D=8811=E6=99=8210=E5=88=86, Luk Jac=
k <jlluckie7156...@gmail.com> wrote:

On 6=E6=9C=8810=E6=97=A5, =E4=B8=8B=E5=8D=889=E6=99=8217=E5=88=86, Ulrich=

Eckhardt <eckha...@satorlaser.com> wrote:

Luk Jack wrote:

On 6=E6=9C=8810=E6=97=A5, =E4=B8=8B=E5=8D=887=E6=99=8209=E5=88=86, Ul=

rich Eckhardt <eckha...@satorlaser.com> wrote:

1. Wrapping something into a class that only contains functions and =

actual state (which is what your cMath class looks like, though I'm =

not

sure) is wrong. If you need, use a namespace instead. I guess you ha=

this habit and probably a few others from Java or similar languages =

that

force you to use classes for everything.

[...]

Actually, I've got an attribute in my cMath class, so isn't it
stateless, is it? not too sure :)

Yes, that would be a valid reason to put it into a class.

Uli

--
C++ FAQ:http://parashift.com/c++-faq-lite

Sator Laser GmbH
Gesch=C3=A4ftsf=C3=BChrer: Thorsten F=C3=B6cking, Amtsgericht Hamburg H=

R B62 932

class cMath
{
public:
            cMath() { }
            ~cMath() { }
            double Integrate(const Formula& f);
            void Derive(const Formula& f);
            Terms *Solve_Term(const Terms& t);
            double Power(double x, int p);
// Formula m_vNomralFunctions; // Normal Functions fo=

r generating

approx function
const Formula& getFormula() { return m_vFormu=

la; }

private:
            Formula m_vFormula;

};

inline void cMath::Derive(const Formula& f)
{

            Terms *t1 = new Terms();
            for (unsigned int i = 0; i < f.size(); i++)
            {
                        t1 = Solve_Term=

(f[i]);

m_vFormula.push_b=

ack(*t1);

            }
            delete t1;

}

inline Terms *cMath::Solve_Term(const Terms& t)
{
            Terms *t1 = new Terms();
            t1->coefficient = t.coefficient;
            t1->degree = t.degree-1;
            t1->coefficient = t1->coefficient*t.degree;

            if (t1->degree < 0)
                        t1->coefficient =

= 0;

//delete t1;
return t1;

}

Thanks

// raise x to the power of p
inline double cMath::Power(double x, int p)
{

    double x1 = x;
    for (int i = 1; i < p; i++)
        x1 *= x;

    return x1;

}