Write a C++ program to read two lengths l1, l2 in the form of meters and centimetres by using a class length. Add these two lengths and return the result to another length l3. Hint: 1 meter=100...

Write a C++ program to read two lengths l1, l2 in the form of meters and centimetres by using a class length. Add these two lengths and return the result to another length l3. Hint: 1 meter=100 centimetre (same as in lecture notes feet and inches program)