Fortran Multiple Choice Questions and Answers for Practice

16. In a FORTRAN program I have set x=1.5,i=3, and j=2. What is the value of y if:

1. 3.0
2. 3.5
3. 4.0
4. 4.5

17. 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

1. 1.5
2. 3.0
3. 4.5
4. 6.0

18. 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)

1. 12.0
2. 16.0
3. 18.0
4. not determined due to a FORTRAN syntax error

19. After compiling the FORTRAN statement: y = c/d + a*x**2-5 Which operation is performed first by the computer?

1. /
2. +
3. *
4. **

20. 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)

1. 1-2-3-4
2. 1-2-4-3
3. 2-1-3-4
4. 2-1-4-3

21. On the Hammond machines, a single precision floating point (REAL*4) number uses how many bits of memory?

1. 4
2. 7
3. 15
4. 32

22. A number stored in Double Precision Floating Point (REAL*8) format can have at most approximately how many decimal digits of precision?

1. 3
2. 7
3. 15
4. 32

23. A real number established with selected_real_kind(6,30) uses how many bits?

1. 16
2. 30
3. 32
4. 48

24. 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?

1. 1025
2. 2,000,000
3. 2,000,000,000,000

25. What is the first number in the following list that can not be represented with a FORTRAN REAL*8 (Double Precision) variable?

1. -3.0*1050
2. 3.0*101000
3. 3.0*10-80
4. 3.0*10100

26. Which of the following is an executable statement (takes an action when a.out is executed)?

1. ALLOCATE
2. DIMENSION
3. PARAMETER
4. EXTERNAL

27. Which of the following is an executable statement (takes action when a.out is executed)?

1. CLOSE
2. EXTERNAL
3. DIMENSION
4. INTRINSIC

28. A FORTRAN WHERE statement:

1. Provides the current line number in the input file being processed
2. Returns the name of the current Subroutine or Function
3. Conditionally executes one or more Fortran 90 vector (array) statements
4. Provides the current cursor position on the terminal screen