Could I find something which could help me transform C++ to C?

[stereomatching]

Could I find some translator which could translate partial C++ codes
to equivalent C codes? like

int max(int A, int B);
double max(double B, double B);

would be translate to something like

int maxInt(int A, int B);
double maxDouble(double B, double B);

template<typename T = int, double, char>
T max(T A, T B);

would be translate to something like

int maxInt(int A, int B);
double maxDouble(double B, double B);
char maxChar(char B, char B);

Or I should write one for myself?
Ok, I know that I should use C++ if I like it
but I can't choose it by my free will
I have to design something like qsort if I have to use C
and it is what I am refuse to.That kind of codes are not
efficient at all but hard to debug and maintain.
But it is even harder to maintain if I don't design a
"partial generic" function by the way like that.

[nezachem]

Comeau may help. I never looked at the generated C code; it may well be unreadable by a human being.

[stereomatching]

Thanks, I will take a look at Comeau.

[jaskij]

According to Marshall Cline's C++ FAQ, which I really like, it is not if the code should be human readable.
http://www.parashift.com/c++-faq-lite/new/convert-to-c.html