Pass "generic" type variable

[CJason]

I'm wanting to create a function that accepts a format, "%d" or "%s" or etc.. (for example), and a value, then this function converts the value to a string. So, something like this:

int my_func(char* fmt, ?value?) {
char* str;
sprintf(str,fmt,value);
return;
}

How can I do this? What do I declare for "value" in the call? OR, is this even possible??

Thanks in advance!!!

 

[cpjust]

It uses the ... function argument (called an ellipsis).
Here's a site that should help:

http://www.codeproject.com/cpp/argfunctions.asp

 

[xwb]

Note that there are two headers for the ellipsis: one for old C programs and one for new stuff. You should be using stdarg.h. The old one can behave slightly differently.

Also, you can't pass the ellipsis from one routine to another.

 

[Salem]

> Also, you can't pass the ellipsis from one routine to another.
But you can pass a valist as a parameter.

CJason's code for example could call va_start, then call vsprintf()


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