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NATIONAL OPEN UNIVERSITY OF NIGERIA
UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
SEPTEMBER 2020 EXAMINATION
COURSE CODE : CIT 736
COURSE TITLE : COMPUTER PROGRAMMING
CREDIT UNIT : 2
TIME ALLOWED: 2 HOURS
INSTRUCTION : ANSWER QUESTIONS 1(ONE) AND ANY OTHER THREE (3)
1a) Given a three-dimensional array A(X,Y,Z). Write a two line FORTRAN 90/95 code that
i) Determine the maximum value less than 5000 in this array. (6 marks)
ii) Computes the average value greater than 1000 in an array. (6marks)
1(b) As a computer programmer, describe the steps you would adopt in dealing with errors emanating from program compilation and execution (5 marks)
c.) Enumerate the four compilers that are used to compile and execute a FORTRAN 90/95 programs. (4 marks)
1d.) Write down any four (4) standard Identifier in Pascal (4 marks)
2. (a) In a tabular form and with appropriate examples differentiate between programming languages and command languages? (6 marks)
(b) Analyze the different forms (data types) that values of variables assume in a program (6 marks)
c.) Describe the process you would adopt to desk-check the program you have (3 marks)
3a) Using suitable diagram, illustrate the process of language translation. (8 marks)
3b.) Analyze the effect of the following FORTRAN statements: i. OPEN (UNIT = 6, FILE = „great.dat‟, STATUS =‟OLD‟, ACTION =‟READ‟) ii. OPEN (UNIT = 8, STATUS =‟SCRATCH‟, IOSTAT =‟ierror‟) iii. 20 FORMAT (8F6.3) . (7 marks)
4. a.) Given a typical program, what criteria would you use to assess the quality of the program? (9 marks)
b) Write out the ten (10) steps to be followed when coding, compiling and executing a Fortran 90/95 program using MS-DEV (6 marks)
5.a.) Write a program in FORTRAN to find the total and product of three numbers “T, F, V” (4½ marks)
b.) Using a given set of values (T=5, F=15, V=4) Desk-check the source code using the format (2½ marks)
c) Characterize eight standard input and output routines and extensions supported by PASCAL (8 marks)
