#include <stdio.h>

int main() {

  float num1 = -1.56E+12, num2 = 2.87e-3;
  double num3 = 35e2;

  printf("\nnum1: %e, num2: %e, num3: %e.\n", num1, num2, num3);
  system("pause");
  return 0;
}