# Fortran Multiple Choice Questions with Answers:-

1. Which of the following is not a valid property of a PARAMETER statement?

A. Can combine other parameters with FORTRAN arithmetic operators to compute the value of a new parameter
B. Parameters can be set anywhere in a program
C. Integer parameters can be used to set array dimensions
D. Parameters can be used as bounds on doing loops.
Ans: B

2. For the following FORTRAN operations give the rank from fastest to slowest in terms of computer time required
A. x*0.5
B. x+0.5
C. x**0.5
D. sqrt(x)
Ans: C

3. Which of the following is not a valid property of a PARAMETER statement?
A. Can combine other parameters with FORTRAN arithmetic operators to compute the value of a new parameter
B. Parameters can be set anywhere in a program
C. Integer parameters can be used to set array dimensions
D. Parameters can be used as bounds on doing loops.
Ans: B

4. In a FORTRAN program, I have set x=2.0, a=2.0 and b=4.0. What is the value of y if y = a*x+b**2/x?
A. 8.0
B. 12.0
C. 16.0
D. 64.0
Ans: B

5. In a FORTRAN program, I have set x=1.5,i=3, and j=2. What is the value of y if:
A. 3.0
B. 3.5
C. 4.0
D. 4.5
Ans: C

6. In a FORTRAN program x=4.5, y=3.0, and w=1.5, What is the value of z if: z = x+w/y+1
A. 1.5
B. 3.0
C. 4.5
D. 6.0
Ans: D

7. In a FORTRAN program x=1.0, y=2.0 and w=3.0. What is the value of z if: z=2.0(x(y+3.0)+w)
A. 12.0
B. 16.0
C. 18.0
D. not determined due to a FORTRAN syntax error
Ans: D

8. After compiling the FORTRAN statement: y = c/d + a*x**2-5 Which operation is performed first by the computer?
A. /
B. +
C. *
D. **
Ans: D

9. For the following FORTRAN operations give the rank from fastest to slowest in terms of computer time required:
1)x*0.5
2)x+0.5
3)x**0.5
4)sqrt(x)
A. 1-2-3-4
B. 1-2-4-3
C. 2-1-3-4
D. 2-1-4-3
Ans: D

10. On the Hammond machines, a single precision floating point (REAL*4) number uses how many bits of memory?
A. 4
B. 7
C. 15
D. 32
Ans: D

11. A number stored in Double Precision Floating Point (REAL*8) format can have at most approximately how many decimal digits of precision?
A. 3
B. 7
C. 31
D. 15
Ans: D

12. A real number established with “selected_real_kind(6,30)” uses how many bits?
A. 4
B. 6
C. 30
D. 32
Ans: D

13. What is the first number in the following list that can not be represented with a Fortran INTEGER*4 ( the default setting on the Hammond machines )data type?
A. 0
B. 1025
C. 2,000,000
D. 2,000,000,000,000
Ans: D

14. What is the first number in the following list that can not be represented with a FORTRAN REAL*8 ( Double Precision ) variable?
A. -3.0*1050
B. 3.0*101000
C. 3.0*10-80
D. 3.0*10100
Ans: B

15. Which of the following is an “executable” statement (takes an action when “a.out” is executed)?
A. ALLOCATE
B. DIMENSION
C. EXTERNAL
D. PARAMETER
Ans: A

16. Which of the following is an executable statement ( takes action when “a.out” is executed)?
A. INTRINSIC
B. DIMENSION
C. EXTERNAL
D. CLOSE
Ans: D

17. A FORTRAN WHERE statement:
A. Provides the current line number in the input file being processed
B. Returns the name of the current Subroutine or Function
C. Conditionally executes one or more Fortran 90 vector (array) statements
D. Provides the current cursor position on the terminal screen
Ans: C

18. The statement “read(10,end=100) mm ” will:
A. branch to the statement with label 100 when the end of the file is reached on unit 10
B. branch to the statement label with 100 when the string “end” is read from unit 10
C. branch to the end of the program when a value of 100 is read from unit 10
D. Set the variable mm = 100 when the end of the file is reached
Ans: A

19. Which of the following statements is a valid way to open the file test? data and associate it with unit 10?
A. open(10,test.data)
B. open(10,’test.data’)
C. open(10, file= test.data )
D. open(10,file=’test.data’)
Ans: D

20. On the Hammond machines, a single percision floating point (REAL*4) number uses how many bits of memory?
A. 4
B. 7
C. 32
D. 15
Ans: D

21. What are the basic data types in Fortran?
A. Integer, Real, Double Precision, Character
B. Integer, Real, Character, Logical
C. INteger, Real, Complex, Character
Ans: B

22. In which column does the code start in Fortran 77 fixed format?
A. 6
B. 9
C. 7
Ans: C

23. What signals a comment in Fortran 95?
A. An exclamation mark ! anywhere on the line
B. A C in column one
C. An asterisk * in column six?
Ans: A

24. How can we continue source code from one line to the next in Fortran 95?
A. by an asterisk * in column 6
B. An ampersand & at the end of a line
C. By using brackets
Ans: B

25. What is the purpose of a number in column 2 to 5 in Fortran 77 fixed format
A. A jump label or format label
B. Just a jump label
C. Just a format label
Ans: A

26. Which of the following is not a valid property of a PARAMETER statement?
A. Can combine other parameters with FORTRAN arithmetic operators to compute the value of a new parameter
B. Parameters can be set anywhere in a program
C. Integer parameters can be used to set array dimensions
D. Parameters can be used as bounds on doing loops.
E. Can be passed as arguments to subroutines
Ans: B

27. In a FORTRAN program, I have set x=2.0, a=2.0 and b=4.0. What is the value of y if y = a*x+b**2/x?
A. 8.0
B. 12.0
C. 16.0
D. 32.0
E. 64.0
Ans: B

28. In a FORTRAN program, I have set x=1.5,i=3, and j=2. What is the value of y if:
y = 2*x + i/j
A. 3.0
B. 3.5
C. 4.0
D. 4.5
E. 5.0
Ans: C

29. In a FORTRAN program x=4.5, y=3.0, and w=1.5, What is the value of z if: z = x+w/y+1
A. 1.5
B. 3.0
C. 4.5
D. 6.0
Ans: D

30. not determined due to a Fortran Syntax error
In a FORTRAN program x=1.0, y=2.0 and w=3.0. What is the value of z if:
z=2.0(x(y+3.0)+w)
A. 12.0
B. 16.0
C. 18.0
D. 22.0
E. not determined due to a FORTRAN syntax error
Ans: E

31. After compiling the FORTRAN statement:
y = c/d + a*x**2-5
Which operation is performed first by the computer?
A. /
B. +
C. *
D. **
E. –
Ans: D

32. When using vi, which of the following commands will delete a full line?
A. d
B. dd
C. dl
D. r
E. x
Ans: B

33. The command ” man ls > more ” will:
A. Provide help on the command “ls” as text in a file called “more”
B. Provide help on the command “ls” viewed with the utility “more”
C. Provide help on commands alphabetically between ls and more
D. Provide a more detailed help on the command “ls” than is usually given
Ans: A

34. When working on a Unix workstation without any special aliases, which of the following commands should be used to delete a file?
A. del
B. dd
C. df
D. of
E. rm