Matlab help.

ENERGY UNIT CONVERSION (14 points x2) Write a program to convert an energy value in a unit of either ) (joule), Btu (British thermal unit), ft-lb (foot- pound) and cal (calorie) specified by the user to another energy unit. The program will ask the user to input: The energy quantity The current energy unit The new energy unit to convert to The program will output: The energy value in the new unit Again, the input and output energy unit will be limited to: J, Btu, ft-lb and cal Energy conversion information: 1 Btu = 1055.06 ) 1 ft-lb = 1.356 ) 1 cal = 4.184) As a practice, write your program in two versions: One use the if statements (econv if.m); and another use the switch statements (econv_switch.m)