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41 lines
945 B
Plaintext
41 lines
945 B
Plaintext
''This page is maintained for historic purposes. The keyword is not supported in QB64.''
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----
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The {{KW|TRON}} statement turns on line number tracing.
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{{PageSyntax}}
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:<code>{{KW|TRON}}</code>
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{{PageDescription}}
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*'''[[Keywords currently not supported by QB64|Not supported in QB64.]]'''
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* When line number tracing is on, the line numbers of statements are output immediately before they are executed.
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* Use {{KW|TROFF}} to turn off line number tracing.
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* Line number tracing only has an effect when programs are compiled with debugging code (<tt>BC.EXE /D</tt>).
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{{PageExamples}}
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:Demonstrates simple line number tracing:
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{{CodeStart}}1 {{Cl|TRON}}
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2 {{Cl|FOR...NEXT|FOR}} n% = 1 {{Cl|TO}} 3
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3 {{Cl|PRINT}} "inside loop"
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4 {{Cl|FOR...NEXT|NEXT}} n%
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5 {{Cl|TROFF}}
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{{CodeEnd}}
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{{OutputStart}}[2][3]inside loop
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[4][3]inside loop
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[4][3]inside loop
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[4][5]
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{{OutputEnd}}
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{{PageSeeAlso}}
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* {{KW|TROFF}}
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{{PageNavigation}}
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