Putting a composite statement in the condition of a for loop

Question

I have a contrived example to demonstrate the request for a specific functionality - I wonder if anyone has a clever trick to do this.

The following is a problem one

Answer 1

Here's a way that requires a separate initialization pass, but that has a slightly cleaner for loop. Array sepsarray holds the separators you want (in this example, commas so you can see them). The last element of sepsarray is followed by a '\0' that terminates the loop.

#include 

#define MAXNUM 5
  //print up to this 

void main() {
  char sepsarray[256] = {0}; //256=arbitrary max size
  int i;
  char *seps=sepsarray;

  for(i=0;i

Output:

0,1,2,3,4,5

Hardly IOCCC material, but hey... :)