Write a program that asks the user to enter a prefix expression. Then, the program

should print out the infix and postfix forms of that expression. Finally, it should

print the result of evaluating the expression. Interacting with the program should

look like this.

Please enter a prefix expression: $++*4567$

The infix form is: $(((4**5)+6)+7)$

The postfix form is: $45**6+7+$

The result is: $33$