You cannot submit for this problem because the homework's deadline is due.

File

Sample Makefile and CMakelists for cpp has been uploaded to canvas (under extra folder). Also, you need to use cpp template for hw7 (under extra folder)

GNUMake

If you choose GNUMake, then you should compress assignment.h, ex1.cpp, ex2.cpp, ex4.cpp, main.cpp, Makefile directly into a zip and submit this zip. (A sample Makefile for hw7 is uploaded on Canvas).

If you just finished ex2 and you immediately want to test whether your ex2 is working correctly. You need to modify your main.cpp, assignment.h, Makefile and then compress main.cpp,assignment.h,Makefile,ex2.cpp into a zip and submit this zip.

The sample Makefile on Canvas has -o main, do not change this main!

CMake

If you choose CMake, then you should compress assignment.h, ex1.cpp, ex2.cpp, ex4.cpp, main.cpp, CMakeLists.txt directly into a zip and submit this zip. (A sample CMakeLists.txt for hw7 is uploaded on Canvas).

If you just finished ex2 and you immediately want to test whether your ex2 is working correctly. You need to modify your main.cpp, assignment.h, CMakeLists.txt and then compress main.cpp,assignment.h,CMakeLists.txt,ex2.cpp into a zip and submit this zip.

The sample CMakeLists.txt on Canvas has add_executable(main ..., do not change this main! Also, do not change cmake_minimum_required(VERSION 2.7)

Description

Write a short C++ program which displays a menu for the user to choose between converting US dollars into Chinese RMB and Chinese RMB into US dollars. The user inputs the amount and the precision, then the program display the corresponding result.

Note: use 1.00 USD = 6.20350 CNY as the exchange rate

Format

Input

three lines, the first one being 1 for USD or 2 for CNY, the amount on the second one, and
the precision on the third one

Output

one line showing the result of the conversion

Sample 1

Input

1
100
6

Output

620.350

Limitation

1s, 32MiB for each test case.