#include <stdio.h>

int main(void) {

  float f = 123.456F;
  double d = 123.456;
  long double ld = 123.456L;

  // Printing the 3 variables of different types:
  printf("float: %f, double: %f, long double: %Lf\n", f, d, ld);

  // Scanning the 3 variables:
  printf("Enter new values: ");
  scanf(" %f %lf %Lf",&f, &d, &ld);

  // Printing again:
  printf("float: %f, double: %f, long double: %Lf\n", f, d, ld);
  
  return 0;
}