Which of the following are valid and what is the dimension of a and b?

Question

Which of the following are valid and what is the size of a and b? I am using java language?

1. int[ ]   a, b;
2. int[ ]   a[ ], b;
3. int[ ]   a[ ], b[ ];
4. int[ ]   [ ]a, b;
5. int[ ]   [ ]a, b[ ];
6. int[ ]   [ ]a, [ ]b;

what is the dimension of a and b. how can i find its dimensions. and what is wrong with the last declaration.

Arvind Carpenter · Accepted Answer · 2019-03-06T13:15:46.210

0

first you have typo instead of Int it should be int.

Answer :- if we want specify dimension before the variable, that facility is applicable only for first variable in a declaration. If we are trying to apply for remaining variables, we will get compile time error.

1. a=1, b=1;
2. a=2, b=1;
3. a=2, b=2;
4. a=2, b=2;
5. a=2, b=3;
6. Compile time error.

edited Mar 06 '19 at 13:15

answered Mar 06 '19 at 12:58

Arvind Carpenter

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Not sure if your answer is even more confusing than the question... – Gyro Gearless Mar 06 '19 at 13:00
@GyroGearless what is confusing here – Arvind Carpenter Mar 06 '19 at 13:02
e.g `b=3` last line, what would this mean? – Gyro Gearless Mar 06 '19 at 13:04
it means b is three dimension array – Arvind Carpenter Mar 06 '19 at 13:06
1

`int [] [] a, [] b` is just syntactically wrong, so there is no array "b" of dimension 3? – Gyro Gearless Mar 06 '19 at 13:13
bro actually there is littile bit confusion here, last one is comile time error, b=3 is the answer of 2nd last. let me give it numbering – Arvind Carpenter Mar 06 '19 at 13:14
OK, makes sense now – Gyro Gearless Mar 06 '19 at 13:17

Which of the following are valid and what is the dimension of a and b?

1 Answers1