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.help "if,else" Feb86 language
.ih
NAME
if else -- conditional execution of a statement
.ih
SYNTAX
\fIif\fR (expression) statement1 [\fIelse\fR statement2]
.ih
ELEMENTS
.ls expression
A boolean valued expression.
.le
.ls statement1, statement2
The statements to be executed (possibly compound, i.e., enclosed in
curly braces).
.le
.ih
DESCRIPTION
The \fIif\fR statement is used to execute a statement only if the
specified condition is true. An optional \fIelse\fR clause may be given
to execute a different statement if the condition is false.
.ih
EXAMPLES
1. Add X to Y only if X is less than Y.
.nf
if (x < y)
y += x
.fi
2. If X is less than 10 print "small", else print "big".
.nf
if (x < 10)
print ("small")
else
print ("big")
.fi
3. The \fIelse if\fR construct.
.nf
if (str == "+")
val += x
else if (str == "-")
val -= x
else if
...
.fi
4. Nesting, use of braces.
.nf
if (i > 0) {
if (i < 10) {
print ("0")
sum = sum * 10 + i
} else
print (" ")
}
.fi
.ih
SEE ALSO
for, case, break, next
.endhelp
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