Fortran Objective type Questions and Answers

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 executeed)?
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 struing "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


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