(Metric Conversion Program) prepare a program that will assist the user with metric conversions. Your program should allow the user to specify the names of the units as strings (e.g., centimeters, liters, grams, for the metric system and inches, quarts, pounds, for the English system) and should respond to simple problems such as "How many inches are in 2 meters?"
"How many liters are in 10 quarts?"
Your program should recognize invalid conversions. For ex, the problem
"How many feet in 5 kilograms?"
is not a meaningful problem because "feet" is a unit of length whereas "kilograms" is a unit of mass.