Conditional execution
Conditional statements first evaluate a Boolean condition and then,
based on whether it's true or false, execute other statements.
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The most common form is:
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Sometimes, the else clause is omitted:
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Often, the else clause provides further
if statements:
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if(condition1) {
// more statements;
.....
}
else {
// more statements;
.....
}
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if(condition1) {
// more statements;
.....
}
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if(condition1) {
// more statements;
.....
}
else if(condition2) {
// more statements;
.....
}
else {
// more statements;
.....
}
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Note that in the examples, above,
each block of statements to be executed
has been written within curly-brackets.
The curly-brackets are not required
(we could just write a single statement for
either if or else clause).
However, adding curly-brackets is considered a good practice.
They provide a safeguard for when additional statements are added later.
CITS2002 Systems Programming, Lecture 2, p9, 24th July 2024.
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CITS2002