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Hi. Can anyone explain these threee? I know that condition if doesnt work, it goes to else. Else ifs are confusing me however....when do I use if, else if and only if -else? Thanks. I really sadly need to grasp the logic behind this. Examples to each would be great!
Else ifs are used when only one of a group of possible choices is valid. If a else if b else if c
the expression is evaluated until one is true then the rest are skipped instead of having to compare each one
if a
if b
if c
even if a is true is still compares b and c
I consider else ifs to be redundant in a lot of situations. For example, if I was testing multiple choice values stored in a char, the else doesn't matter (except maybe for speed) because the condition will evalute to false anyway. With the else, the condition and it's corresponding code is compeltely ignored.
NOTE: Although in the above example it's probably better to use a switch statement anyway.
just an exampleCode:if (a<b)
...
else if (a==b)
...
else
...
Gee, thanks alot guys. The explanation cleared up a lot of confusion in my head regarding that subject.
If what you comparing can't be reduced down to a single integer value you won't be able to use switch and will have to use another control structure.Quote:
NOTE: Although in the above example it's probably better to use a switch statement anyway.