cinput.c
========

#include <stdio.h>

main()
{
  char		c1, c2, c3;
  int		i;
  float		x;
  double	y;

  printf("\n%s\n%s",
     "Input three characters,",
     "an int, a float, and a double: ");
  scanf("%c%c%c%d%f%lf", &c1, &c2, &c3, &i, &x, &y);
  printf("\nHere is the data that you typed in:\n");
  printf("%3c%3c%3c%5d%17e%17e\n\n", c1, c2, c3, i, x, y);
}

Output:

Input three characters,
an int, a float, and a double: ABC  3   55 77.6

Here is the data that you typed in:
  A  B  C    3     5.500000e+01     7.760000e+01