Re^3: logic problem with perl game

Like the following, and you need to use && not "and" (unless you get the precedence straight by using ()):

if(($response eq "arrow" && $theword eq "sparrow")) {
...
} elsif(($response eq "axe" && $theword eq "wax")) {
...
} elsif(($response eq "shield" && $theword eq "field")) {
...
} elsif(($response eq "spear" && $theword eq "tear")) {    
...
} else {
}
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Peter (Guo) Pei

Comment on Re^3: logic problem with perl game Download Code

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Re^4: logic problem with perl game by Anonymous Monk on Dec 04, 2010 at 03:36 UTC
PeterPeiGuo, your doubled parentheses serve no function. Perhaps you meant to contain each condition in parentheses? But even so, your advice only complicates the code, by losing operater-precedence contrast. To mynameisG, regarding the original post: your original conditional code is perfect -- easy to read and does what it says. The reason "and" and "or" exist as low-precedence operators is for that very reason. You don't need to add parentheses (especially ones that do nothing) when "and" and "or" always have lower precedence than comparison operators like "eq" and ">=".	[reply]

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Re^4: logic problem with perl game
by Anonymous Monk on Dec 04, 2010 at 03:36 UTC

To mynameisG, regarding the original post: your original conditional code is perfect -- easy to read and does what it says. The reason "and" and "or" exist as low-precedence operators is for that very reason. You don't need to add parentheses (especially ones that do nothing) when "and" and "or" always have lower precedence than comparison operators like "eq" and ">=".

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