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Goto 音標拼音: [g'ot ,u] [g'oto] 到,去 到,去 goto* goto指令 (Or "GOTO", "go to", "GO TO", "JUMP", "JMP") A
construct and {keyword} found in several higher-level
programming languages (e.g. {Fortran}, {COBOL}, {BASIC}, {C})
to cause an {unconditional jump} or transfer of {control} from
one point in a program to another. The destination of the
jump is usually indicated by a {label} following the GOTO
keyword.
In some languages, a label is a line number, in which case
every statement may be labelled, in others a label is an
optional alphanumeric {identifier}.
Use of the GOTO instruction in {high level language}
programming fell into disrepute with the development and
general acceptance of {structured programming}, and especially
following the famous article "GOTO statement {considered
harmful}". Since a GOTO is effectively an {assignment} to the
{program counter}, it is tempting to make the generalisation
"assignment considered harmful" and indeed, this is the basis
of {functional programming}.
Nearly(?) all {machine language} {instruction sets} include a
GOTO instruction, though in this context it is usually called
branch or jump or some {mnemonic} based on these.
See also {COME FROM}.
(2000-12-13)
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