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Const declares constants, which can be used in expressions, in place of literal values. The required component, ''name'', must follow standard variable naming conventions. The required component, ''expression'', is any literal, constant, or combination that includes all arithmetic or logical operators (except IS). | Const declares constants, which can be used in expressions, in place of literal values. The required component, ''name'', must follow standard variable naming conventions. The required component, ''expression'', is any literal, constant, or combination that includes all arithmetic or logical operators (except IS). | ||
All constants declared inside procedures are available only within the procedure. Const works the same way as | All constants declared inside procedures are available only within the procedure. Const works the same way as Dim, however it is used to identify variables whose value should not be changed. | ||
Multiple constants may be declared on a single line, by separating each constant assignment with a comma. | Multiple constants may be declared on a single line, by separating each constant assignment with a comma. | ||
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== Example == | == Example == | ||
< | <tabber> | ||
JavaScript= | |||
<syntaxhighlight lang="JavaScript"> | |||
//Const Example | |||
//Const defines constants | |||
const SHAPE = "Rectangle"; | |||
const AREA = 51; | |||
const LENGTH = 7, WIDTH = 11; | |||
PrintArea(LENGTH, WIDTH); | |||
function PrintArea(l, w) { | |||
var Area; | |||
Area = l * w; | |||
NSB.Print(SHAPE + " area: " + l + " * " + w + " = " + Area); | |||
} | |||
</syntaxhighlight> | |||
|-| | |||
BASIC= | |||
<syntaxhighlight lang="vb.net"> | |||
Rem Const Example | Rem Const Example | ||
'Const defines constants | 'Const defines constants | ||
Const SHAPE = "Rectangle" | Const SHAPE = "Rectangle" | ||
Const AREA = 51 | Const AREA = 51 | ||
| Line 22: | Line 41: | ||
Area = l * w | Area = l * w | ||
Print SHAPE & " area: " & l & " * " & w &" = " & Area | Print SHAPE & " area: " & l & " * " & w &" = " & Area | ||
END | END Sub | ||
</ | </syntaxhighlight> | ||
</tabber> | |||
== Output == | == Output == | ||
| Line 33: | Line 53: | ||
== Related Items == | == Related Items == | ||
[[function|Function]], [[sub|Sub]] | [[dim|Dim]], [[function|Function]], [[sub|Sub]] | ||
[[Category:Language Reference]] | [[Category:Language Reference]] | ||
[[Category:Variables]] | |||
Const name=expression
Const declares constants, which can be used in expressions, in place of literal values. The required component, name, must follow standard variable naming conventions. The required component, expression, is any literal, constant, or combination that includes all arithmetic or logical operators (except IS).
All constants declared inside procedures are available only within the procedure. Const works the same way as Dim, however it is used to identify variables whose value should not be changed.
Multiple constants may be declared on a single line, by separating each constant assignment with a comma.
//Const Example
//Const defines constants
const SHAPE = "Rectangle";
const AREA = 51;
const LENGTH = 7, WIDTH = 11;
PrintArea(LENGTH, WIDTH);
function PrintArea(l, w) {
var Area;
Area = l * w;
NSB.Print(SHAPE + " area: " + l + " * " + w + " = " + Area);
}
Rem Const Example
'Const defines constants
Const SHAPE = "Rectangle"
Const AREA = 51
Const LENGTH = 7, WIDTH = 11
PrintArea LENGTH, WIDTH
Sub PrintArea(l, w)
Dim Area
Area = l * w
Print SHAPE & " area: " & l & " * " & w &" = " & Area
END Sub
Rectangle area:7*11=77