#include <stdio.h>

int main(int argc, char* argv[]) {
  
  /* some local variables */
  int i = 7;
  float x = 2.71828;
  double y = 3.1415926;
  char c = 'w';

  printf("%d, %c, %f, %lf\n", 
	 i, c, x, y);

  return 0;
}