Difference between revisions of "Global variables"
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− | A global [[Variable | + | A global [[Variable]] is a variabe that is declared in the main section of a program or the interface part of a unit. Globals declared in a program cannot be accessed from within a unit. Globals declared in a unit can be accessed from within a program or another unit. |
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+ | program GlobalVariables; | ||
var | var | ||
− | + | g: integer; | |
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begin | begin | ||
end. | end. | ||
− | ''' | + | '''g''' is a global variable. |
Revision as of 13:03, 10 March 2015
A global Variable is a variabe that is declared in the main section of a program or the interface part of a unit. Globals declared in a program cannot be accessed from within a unit. Globals declared in a unit can be accessed from within a program or another unit.
program GlobalVariables; var g: integer; begin end.
g is a global variable.
External variable
External variable is a global variable has been declared in unit interface section.