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Thread: finding errors in if statements
 03292012, 11:21 PM #1Member
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finding errors in if statements
Find the errors in the following if statements.
a. if (x && y == 0) { x = 1; y = 1; }
b. if (1 <= x <= 10)
System.out.println(x);
c. if (!s.equals("nickels")  !s.equals("pennies")
 !s.equals("dimes")  !s.equals("quarters"))
System.out.print("Input error!");
d. if (input.equalsIgnoreCase("N")  "NO")
return;
To some advanced users, this may seem simple. However for me it;s hard to pick out! Does anyone want to take a wack at it? Thanks!

Re: finding errors in if statements
 03292012, 11:44 PM #3Member
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Re: finding errors in if statements
Ok, not sure if this is right. I think in b.) it should be changed to f (1 <= x && x <= 10) otherwise it wont work.
In c.) ! means not, so I dont understand what !s.equals("dimes") etc means? that looks like it would translate to not s equals.
a.) doesnt make much sense to me either because what i'm getting from it is : if x and y have a value of 0, x =1 and y=1.
 03302012, 08:56 PM #4Member
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Re: finding errors in if statements
Can someone tell me if my answer (or part of the answer) if true at all? Thanks.
 03302012, 09:40 PM #5
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Re: finding errors in if statements
c) is also incorrect but for an entirely different reason (the others don't even syntactically make sense); suppose you want to test something against A and B; suppose that something is C; of course it isn't equals to A or B; but now suppose the something if A; it is definitely equal to A but it isn't equal to B so the or test () is still true: A isn't equals to A or B.
kind regards,
Jos (or not Jos)cenosillicaphobia: the fear for an empty beer glass
 03302012, 10:36 PM #6Member
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