END TERM EXAMINATION

FIRST SEMESTER [BCA] DEC-2019

Solve The Paper

• Q1. Answer briefly (Any Five): (5x5=25)
• (a) Discuss pre processor directives in c.
• (b) What do you understand by dynamic memory allocation? Explain malloc(), calloc(), realloc() and free() functions with their syntax and a suitable example.
• (c) Write a short note on storage classes in c.
• (d) Discuss the various operators in c.
• (e) Explain the different loop structures in c through suitable examples.
• (f) Distinguish between a structure and a union through a suitable example.

UNIT I

• Q2. (a) Explain the if..else statement with all its variations. Compare it with switch..case. Write a c program that demonstrates the difference between the two. (7)
• (b) Write a c program to test whether a given integer is a prime number or not. Display an appropriate message in the output. (5.5)

• Q3. (a) What do you understand by type casting? Why is it required? Explain Using An example (6)
• (b) Write a C program to display the following pattern (for n lines): (6.5)
• 1
• 1 2
• 1 2 3
• 1 2 3 4

UNIT II

• Q4. (a) Write a short note on recursion. (5.5)
• (b) Write a complete c program that displays the first n Fibonacci numbers through a recursive function Fibonacci. (7)

• Q5. (a) Differentiate between call by value and call by reference methods of passing parameters to functions using an appropriate example. (7)
• (b) Write a c function that searches for an element x in an array of integers. (5.5)

UNIT III

• Q6. (a) What are structures and what are Bit Field structures? How are they different from Unions? (4)
• (b) Explain how structures can be passed as parameters to functions, by value and by reference? And how they can be returned from functions? (6)
• (c) What do you understand by pointers to structures? How can we access the elements of a structure through a pointer to the structure? (2.5)

• Q7. (a) Write a C program that creates and displays a text file on screen. (7.5)
• (b) Discuss the following file handling functions, through syntax and examples: (5)
• i) fopen()
• ii) fclose()
• iii) fseek()
• iv) fwrite()
• v) fread()

UNIT IV

• Q8. (a) Write a program that counts the number of occurrences of a character in a given string without the use of any string handling library functions. (7.5)
• (b) Explain any five string handling functions from string.h with syntax and example. (5)

• Q9. (a) Write a short note on header files. (2.5)
• (b) Explain any two functions each from the following header files: Stdio.h, math.h, stdlib.h, ctype.h, string.h (10)