Written using matlab language

Each number on telephone keypads, except 0 and 1, corresponds to a set of uppercase letters as shown in this list: 2 ABC, 3 DEF, 4 GHI, 5 JKL, 6 MNO, 7 PQRS, 8 TUV, 9 WXYZ Hence, a phone-number specification can include uppercase letters and digits. Write a function called dial that takes as its input argument a string of length 16 or less that includes only these characters and returns as its output argument the telephone number. Here is the input and output for one example of a call of the function: Input: '1FUNDOG4YOU Output: 13863644968 You can assume that a phone number never starts with 0. If the input contains any illegal characters, the function returns 0