DipIETE – ET/CS (NEW SCHEME) – Code: DE53 / DC53
Subject: COMPUTER FUNDAMENTALS & C PROGRAMMING
Time: 3
Hours
Max. Marks: 100
NOTE: There are 9 Questions in all.
· Question 1 is compulsory and carries 20 marks. Answer to Q. 1. must be written in the space provided for it in the answer book supplied and nowhere else.
· Out of the remaining EIGHT Questions answer any FIVE Questions. Each question carries 16 marks.
· Any required data not explicitly given, may be suitably assumed and stated.
Q.1 Choose
the correct or the best alternative in the following: (2
10)
a. Decimal to Binary conversion of 9 is?
(A) 1010 (B) 1011
(C) 1000 (D) 1001
b. What is an Operating System?
(A) Input device
(B) Central processing unit
(C) Interface between user and computer
(D) All the above
c. Choose the correct answer?
(A) INTERNET is LAN
(B) INTERNET is a Network
(C) ARPANET followed INTERNET
(D) None of the above
d. If Y = 8, the value of X = (--Y) + 5 is
(A) 10 (B) 12
(C) 11 (D) 13
e. Which of the following statements is used to take the control to the beginning of the loop?
(A) exit (B) break
(C) continue (D) none of the above
f. When int B[2][3] = {5, 6, 7, 8, 9, 6} ;
What will be the value of B[1][3]?
(A) 5 (B) 7
(C) 8 (D) 6
g. Arrays are passed as arguments to a function by?
(A) Value (B) Reference
(C) Both (A) and (B) above (D) None of the above
h. Opening a file:
FILE *p ;
p = fopen ( “amps”, “a” );
(A) “ a” is for reading the file (B) “a” is for writing the file
(C) “a” is for modifying the file (D) None of the above
i. Which of these is correct to define a pointer?
(A) int_ptr c ; (B) int *ptr ;
(C) *int ptr ; (D) *y ;
j. Mathematical functions are available in which header file in C?
(A) stdio.h (B) stdlib.h
(C) math.h (D) io.h
Answer any FIVE Questions out of EIGHT Questions.
Each question carries 16 marks.
Q.2 a. Explain, what is an algorithm? How can a problem be solved using computers? (4)
b. Describe the basic model of a computer? (4)
c. Explain the use of Binary Numbers in Computers? (4)
d. Convert decimal number 23.6 to binary number, upto 5 digits after decimal point? (4)
Q.3 a. How Input and Output Data is processed on the computers? (4)
b. Describe various types of the Input Units? (4)
c. Why computer programming language is required? List out some of the prominent programming languages? (4)
d. Define operating system. Explain personal computer operating system. (4)
Q.4 a. Give a brief about Development and Evolution of Microcomputers? (3)
b. Describe briefly an Actual Microcomputer and its CPU, and Minimum Microcomputer Configuration. (3)
c. What is a Network? How Computer Networks can help in communication and data exchange? (4)
d. What is ARPANET? What is its significance? (3)
e. What is Internet? (3)
Q.5 Write short notes, with examples, on:
(i) Real or Float Constants (4)
(ii) Variable data and its identification (4)
(iii) Relational operators (4)
(iv) Write the output of the following program: (4)
/* Program demonstrating printing
#include <stdio.h>
main( )
{
int A = 1246, B = - 5436 ;
float C = - 123.1246, D = 1347.13 ;
double E = - 136.1234467809 , F = 136123446.7809 ;
printf (“Values are:\n”) ;
printf (“\n”) ;
printf (“A = %d B = %d \n”, A, B);
printf (“%f %f \n”, C,D) ;
printf (“\n”) ;
printf (“13234557510\n”) ;
printf (“\n”) ;
printf (“E = %e F = %e \n”, E, F) ;
}
Q.6 a. In what ways does a switch statement differ from an if statement? (3)
b. Find errors, if any, in the following program segment:
if (code >1);
a = b+c
else
a=0 (3)
c. Salary structure of a company is given below. Write a program in C to derive salary of a desired category of worker (10)
_________________________________________________
Worker Experience Qualification Salary
Years
_________________________________________________
Skilled More than 5 ITI 11000
More than 5 HSec 8000
Less than 5 ITI 7000
Less than 5 HSec 5000
Semi Skilled More than 5 ITI 9000
More than 5 HSec 6000
Less than 5 ITI 5000
Less than 5 HSec 4000
Q.7 a. Define an array. Explain the need for array variables. (4)
b. Describe the limitations of using getchar and scanf functions for reading strings. (4)
c. Write a program to find the greatest number and its position in the following Array;
Array[6] = { 2, 5, 3, 8, 6, 4} ;
Print the maximum number and its position. (8)
Q.8 a. The function main( ) is a user defined function. How does it differ from other user defined functions? (4)
b. Distinguish between the following:
(i) Actual and formal arguments.
(ii) Global and local variables. (6)
c. Write a function ‘prime’ that returns 1 if its argument is a prime number and returns zero otherwise. (6)
Q.9 a. What is a pointer? How is it initialized? (4)
b. Explain the difference between ‘call by reference’ and ‘call by value’. (5)
c. How does an append mode differ from a write mode? (4)
d. What is the significance of EOF? (3)