You can declare a lot of variables of a particular type at the same time if you like:

int sheep, goats, cows, pigs ;
/* .. as used by Old MacDonald.. */

The list of variables is separated by the comma character and terminated by the semicolon.

Of course you can't declare variables of different types in the same declaration.

/*  Multiple Declaration  */
void main ( void )
{
  /* speed from 0-700mph          */
  /* height from 0-1,000 feet     */
  int speed, height ;
  /* compass point - N, S, E or W */
  char compass ;
}