Flow-control structures: Difference between revisions
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=={{header|Fortran}}== |
=={{header|Fortran}}== |
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===The basic: GO TO ''label''=== |
===The basic: GO TO ''label''=== |
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Fortran offers <code>GO TO ''label''</code> where ''label'' is a number, an integer, which is prefixed to some executable statement according to the rules of Fortran source layout. It is not considered to be a numerical value, though zero is not an allowed label. Fortran has no reserved words and gives no significance to spaces, so that <code>G O TO 12 3 4</code> is just as valid as <code>GO TO 1234</code> and other usages. |
Fortran offers <code>GO TO ''label''</code> where ''label'' is a number, an integer, which is prefixed to some executable statement according to the rules of Fortran source layout. It is not considered to be a numerical value, though zero is not an allowed label and leading zero digits are ignored. Fortran has no reserved words and gives no significance to spaces, so that <code>G O TO 12 3 4</code> is just as valid as <code>GO TO 1234</code> and other usages. Text labels are not allowed, however a statement such as <code>GO TO START</code> is possible. Even so, "START" is not itself a label, but the name of a variable which is used in special ways - see the ASSIGN statement usage, below. |
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===Elaborations on GO TO=== |
===Elaborations on GO TO=== |
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