Variable Arguments

JCL once postet a piece of code from a standard C book. With some fiddling I erased all compiler errors, but it produces a crash. So, any chance to get some variable args into my app?

Boo is making some Foo.

bump bump bump

Are you talking about

int main(int argc, char *argv[])

or

void func(int, ...);

example for variable arguments:

Code:

---

#include <cstdarg>
#include <iostream>

using namespace std;

double average ( int num, ... )
{
  va_list arguments;                     // A place to store the list of arguments
  double sum = 0;

  va_start ( arguments, num );           // Initializing arguments to store all values after num
  for ( int x = 0; x < num; x++ )        // Loop until all numbers are added
    sum += va_arg ( arguments, double ); // Adds the next value in argument list to sum.
  va_end ( arguments );                  // Cleans up the list

  return sum / num;                      // Returns some number (typecast prevents truncation)
}
int main()
{
  cout<< average ( 3, 12.2, 22.3, 4.5 ) <<endl;
  cout<< average ( 5, 3.3, 2.2, 1.1, 5.5, 3.3 ) <<endl;
}

---

As I'm skilled in Cpp I know how to use them there I want a Lite-C sample cause I never got it to work there.

Referring to this thread: http://www.coniserver.net/ubbthreads/sho...true#Post733811

Seems like it simply doesn't work. The arguments aren't copied to the stack in case of "...".

I wrote a little program that demonstrates it. Both functions tst1 and tst2 should return the integer that is stored after parameter a. This seems to work only for tst1.

Code:

---

#include <acknex.h>
int tst1(int a, int b)
{
   return *((&a) + 1);
}
int tst2(int a, ...)
{
   return *((&a) + 1);
}

int main()
{
   if(tst1(1, 2) == 2)
      printf("test 1 success");
   else
     printf("test 1 failure");
     
   if(tst2(1, 2) == 2)
      printf("test 2 success");
   else
     printf("test 2 failure");
}

---

Hi!

Was int not changed to integer?

Ottawa

JCL stated, that this is not supported at the moment, because it required major changes in the way the compiler works. However, he stated he'd take care about this in the future.