using own function in writing a function

can I use a function (written by myself) in writing a new function?

Yes.

Sure. Is this what you meant:

Code:

---

void func()
{
    printf("void newfunc()\{\n\tprintf(\"Hello, World\\n\");\n}\n");
}

---

Obviously, you may make this as complicated as you like, and output it to a file if you like.

[I know, this is probably NOT what you meant to ask for, but I couldn't resist answering a different one... ;)]

--
Mats

then, I should define which one first?

Quote:

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Originally Posted by behzad_shabani

then, I should define which one first?

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Doesn't really matter - it's a style issue. If you are only calling one from the other, then I personally prefer to put the outermost (called last) first, and then work in towards main. But I starting programming in Pascal many years ago, and in Pascal you are not meant to forward declare function unless one calls the other recursive manners.

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Mats