Question

Which of the strings cannot be generated using the expression (a*b)*a* ? (a) aaaaaa (b) abaaa (c) abab (d)aaaaaba

Answer 1

Answer is

(a) aaaaaa

this string cannot be generated using the expression (a*b)*a*

Answer 2

Answer:

The string aaaaaa cant be generated using the above expression

Explanation:

• As we can see that the expression given to us is
  $(a*b)*a$
• Here we can clearly see that the output will be ab , a times as ab firstly makes the product then that product is repeated a times.
• An array of characters is how strings are defined. A string is different from a character array in that it has a special character at the end.
• A one-dimensional array can be declared just as easily as a string. The fundamental syntax for declaring a string is shown below.
  char ch[];
  #SPJ3