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.help for Feb86 language
.ih
NAME
for -- FOR statement
.ih
SYNTAX
for ([assign1] ; [bool_expr] ; [assign2]) statement
.ih
ELEMENTS
.ls assign1
An assignment used to initialize the \fIfor\fR loop.
.le
.ls bool_expr
A boolean valued expression tested before each iteration.
.le
.ls assign2
An assignment executed after each iteration of the loop.
.le
.ls statement
A statement (possibly compound, i.e., enclosed in curly brackets)
to be executed in each iteration of the loop.
.le
.ih
DESCRIPTION
The \fIfor\fR statement provides a looping mechanism similar to the C-language
for loop. \fIAssign1\fR and \fIassign2\fR are assignment statements using
one of the operators '=', '+=', '-=', '/=', '*='. Any of the elements of
the \fIfor\fR loop may be omitted, except the parenthesis and colon field
delimiters.
.ih
EXAMPLES
1. For I equals zero to 10 in steps of 2, increment TOTAL by the value of
array element I.
.nf
for (i=0; i <= 10; i += 2)
total += array[i]
.fi
2. Print the first eight powers of two.
.nf
j = 1
for (i=1; i <= 8; i += 1) {
print (i, j)
j *= 2
}
.fi
.ih
BUGS
A simple assignment of the form i++ will not work.
Only one assignment statement is permitted in the first and third fields.
.ih
SEE ALSO
while, case, break, next
.endhelp
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