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Hi all, whilst making a small change to an old C++ program ( not mine ) I came across this line

C++

zz: for (iline = 236;iline < 242;iline++)

anyone know what the zz: means ?

What I have tried:

Hi all, whilst making a small change to an old C++ program ( not mine ) I came across this line

C++

zz: for (iline = 236;iline < 242;iline++)

anyone know what the zz: means ?

Posted 17-Jan-18 1:22am

pkfox

Updated 17-Jan-18 1:30am

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OriginalGriff · Accepted Answer · 2018-01-17T01:28:00

Solution 1

It's a label. That means it can be the target of a goto instruction, which means the program is almost certainly badly written - I haven't needed a goto in over twenty years!

I'd suggest extreme caution when editing the program: the existence of a goto complicates the code flow and implies it won't be the only one. I'd look to refactoring the code to remove all goto instructions if possible before you even start trying to modify the code.

Posted 17-Jan-18 1:28am

OriginalGriff

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pkfox 17-Jan-18 9:26am

Thanks Paul, the whole program will be rewritten very soon ( it was written in 2001 ) in C# , the change I've got to make is a path to the output file so should be ok , I agree ( goto ) I've never used a goto in my life

OriginalGriff 17-Jan-18 10:20am

:grin:

pkfox 17-Jan-18 17:14pm

I know I know :-)

Jochen Arndt · Accepted Answer · 2018-01-17T01:30:00

Solution 2

It is a label used as goto statement - cppreference.com[^] destination.

Posted 17-Jan-18 1:30am

Jochen Arndt

Comments

pkfox 17-Jan-18 9:26am

Thanks Jochen