C++

In this exercise, you will write a program to convert money in different currencies. The program takes as input the original currency, the amount, and the currency to convert to, and outputs the amount in the new currency with double digit precision.

For example, given the input

EUR 2 USD 

The output should be

2.46 

The valid currencies for this program are Euros, American dollars and Yens. They will be entered using 3 letters identifiers: EUR, USD, YEN.

Use the following values for the conversions (you should be able to use these values to convert in both directions):

• 1 EUR = 1.23 USD
• 1 EUR = 126.20 YEN
• 1 USD = 102.80 YEN

If the user enters the wrong identifier for one of the currencies (that is, anything other than EUR, USD or YEN), print the message

Invalid input 

End all messages with a new line.