Question

by using Fortran.90 solve the Question below?

Q1)Correct the names of the following variable according to the fortran.90 stander.
1)Max'power, 2) 2*level, 3) low temp,   4) High(speed)

Q2)Which of the following are invalid names in Fortran 90 and why?
1)A_HUGE_NUMBER
2)thedate
3)abignumber
4)Program
5)10times
6)Time.minutes
7)HELP!
                                                                   1066(8       
9)another-number
10)no way
11)f[t]
12)X

Answer 1

Q1)
    1) Maxpower    -The ' character is not allowed
    2) level2      -The name cannot start with digit and cannot contain *
    3) lowtemp     -The name cannot contain blanks
    4) Highspeed   -The name cannot contain ( or )

Q2)
    5) is invalid because the name is starting with a digit
    6) is invalid because the character . is present
    7) is invalid because the ! is present
    8) is invalid because it is a number
    9) is invalid because the character - is present
    10) is invalid because it contains blanks
    11) is invalid because characters [ and ] are present

    The rules for variable names in fortran 90 are:

      - A variable name must start with an letter.
      - After that, the rest of the name can contain only letters (a--z), digits (0--9) or underscore character _ (no blanks!).
      - A variable name can be no longer than 31 characters.

Hope this was useful