Function parameters

[DilloDude]

If i'm writing a function with parameters,

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void function(int param1, char *param2)
...

, how can I have it so it has two parameters, but you only enter 1? So if you enter a string, it will do one thing, but if you enter an integer, it will do another. Like in the sprintf function, you enter your strings and another variable, and it can be a string, a real or an integer variable.

[Fuzzy]

I think Printf does something special, taking a single argument and breaking it down internally.