Computer science homework, please help with C++ code

Write a program that takes three real (float or double) numbers as input. The program then outputs the second largest number with three decimal digit precision. You can safely assume that the three input numbers have distinct values. Ex: if the user inputs. 4.21 3.9 10 the program will output: 4.210 Any attempt to hard code answers will result in a 0 for the exercise. 298600.1524762.9X3zqy7 LAB ACTIVITY 34.1.1: Unit 1 - Exercise 3A (3/13) 0/50 main.cpp 1 Develop mode Submit mode Run your program as often as you'd like, before submitting for grading. Below, type any needed innut values in the first boy then click Diin program and observe the program's autout in the image2 (10).jpeg image1 (15).jpeg A image0 (29).jpeg ALIENWARE F3 Fy F6 END FZ F8 FIO F9 DELETE HOME F12 T-PAD MUTE ALIEN FX PAUSE PRT SCRN INSERT # BACKSPAC $ % & +