GATE CSE 1999 | Question: 2.14

Question

The number of tokens in the FORTRAN statement DO 10 I = 1.25 is

• A. 3
• B. 4
• C. 5
• D. None of the above

Comments

A)3

there are 3 tokens because its 1.25 not 1,25 . Notice the dot and comma in those.  Answer would be 5 if it would have comma 1,25 .

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what 's its right option ??

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option A is right option

Answer 1

(a) 3 is Answer , 
token1= DO10I ,

token2= '='

token3=1.25

Within the statement field, blanks were generally ignored, allowing the programmer to omit space between tokens for brevity, or include spaces within identifiers for clarity (for example, AVG OF X was a valid identifier, and equivalent to AVGOFX). 

reference @http://en.wikipedia.org/wiki/Fortran

Comments

@LeenSharma  and @ Mithlesh  token1= DO10I // is a special keword use in fortran ??

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What does the following statement mean?

DO10I

Answer 2

5 tokens

1.DO 

2.10

3.I

4=

5.1.25

Comments

Are, its okay. Tum to serious hogaye :)

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Why we are rejecting the fact that whitespaces are insignificant. Any specific reason please share.

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But the correct ans given is 5(according to geeksforgeeks).

Answer 3

This is a fortran statement and in fortran blanks in fixed-format are ignored hence, in fortran this statement is considered as an instance of the identifier. So number of tokens will be 3 (DO5I, =,1.25).

If statement was like DO 5 I = 1,25 then it would have been considered as a DO statement.

Reference : - Dragon book, Page number 113 second edition.

Comments

I dont have book. Can u please scan the page and share

Answer 4

Is it 5?

Comments

It is 5 Tokens........