Passing variable number of arguments around
c, variadic-functions
Solution
To pass the ellipses on, you initialize a `va_list` as usual and simply pass it to your second function. You don't use `va_arg()`. Specifically;
void format_string(char *fmt,va_list argptr, char *formatted_string);
void debug_print(int dbg_lvl, char *fmt, ...)
{
char formatted_string[MAX_FMT_SIZE];
va_list argptr;
va_start(argptr,fmt);
format_string(fmt, argptr, formatted_string);
va_end(argptr);
fprintf(stdout, "%s",formatted_string);
}
Problem
Say I have a C function which takes a variable number of arguments: How can I call another function which expects a variable number of arguments from inside of it, passing all the arguments that got into the first function? Example: ``` void format_string(char *fmt, ...); void debug_print(int dbg_lvl, char *fmt, ...) { format_string(fmt, /* how do I pass all the arguments from '...'? */); fprintf(stdout, fmt); } ```