1. The concept of machine thinking rationally is justified by:

a. Cognitive science theory

b. Concept of rational agent

c. Laws of thought

d. Turing test

2. The concept of machine acting humanly is justified by:

a. Cognitive science theory

b. Concept of rational

c .agent Laws of thought

c. Turing test

Q51;

In Java,

I have a program in Java that asks the user to enter 2 arguments: one integer and one letter: Y or N. How can I make sure the arguments entered are correct? For example: if the user enter a letter instead of an integer, how can I make the program recognize that a letter was entered instead of an integer and vice versa. And how can I make the program not crush and show a message asking for the user the enter the correct argument instead?