Sentinel Example

Sentinel.c

#include <stdio.h>
#include <stdarg.h>

void printlist(int begin, ...)
{
  va_list ap;
  char *p;
  va_start(ap, begin);
  p = va_arg(ap, char *);
  
  while (p != NULL) {
    fputs(p, stdout);
    putchar('\n');
    p = va_arg(ap, char*);
  }
  
  va_end(ap);
}

int main(void)
{
  printlist(0, "hello", "world", "foo", "bar",NULL);
  return 0;
}