Can block comments be nested?
Unfortunately, Java does not allow nesting block comments, so all lines must be commented out using // , making all of them appear in the “diff”. Nested comment blocks might also prove helpful when writing code documentation.
Why are nested comments?
Nested comments are usually a sign that you are using comments wrong. The most common example is commented-out code that contains comments itself, and the fix is to remove the code instead of commenting it out.
Which programming language uses for comments?
In FORTRAN, BASIC, and COBOL languages, comments are full lines; and each comment is begun by a specific comment mark in a fixed position on the line. In BASIC, REMark lines start with REM.
Can we use nested comments in C++?
Because C’s comments start and end with specific characters, you cannot put one comment inside another. This is known as nesting. Nested comments can cause errors in your code, so while you’re programming, keep track of where comments start and end. That’s the part the compiler ignores as a comment.
Do comments affect the way that a program executes?
Commenting will not affect the script execution time in normal case. But the number of lines you write in your code affect the parser to read and buffer it considerably.
What to do about nested comments in C + +?
There are several solutions to this problem of nested comments. One is the compiler can warn about all nested comments, that is a comment that has a “/*” in it. The second solution is to forbid nested comments, which is done in some languages, including C++.
Why are nested comments not allowed in Java?
/* This is a comment /* Nested Comments */ are not allowed. Anything which lies between /* and */ is treated as a comment. In the above example from This up to Comments everything is treated as comments including /*. Hence, are not allowed.
How are comments used in a programming language?
Comments are used in a programming language to document the program and remind programmers of what tricky things they just did with the code, or to warn later generations of programmers stuck with maintaining some spaghetti code. While comments may seem to be a minor issue in a language, an awkward comment format in a language is a nuisance and
Is it good to have comments inside comments?
The benefit of having comments inside comments is that you can comment out blocks that contain comments without stripping the comments manually, which is particularly frustrating for blocks that have comment on every line.