Sathyabama University BE common to all branches 4ET115/5ET115/6C0007/5ET206 (2006/07/08/09) Programming in C Dec 2010

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SATHYABAMA UNIVERSITY

(Established under section 3 of UGC Act, 1956)

Course & Branch: B.E/B.Tech – Common to ALL Branches

Title of the Paper: Programming in C                    Max. Marks: 80

Sub. Code: 4ET115/5ET115/6C0007/5ET206 (2006/07/08/09)    Time: 3 Hours

Date: 08/12/2010                                                    Session: FN

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PART - A                (10 X 2 = 20)

Answer ALL the Questions

1.     Write the characteristics of Structured Programming Languages.

2.     How do constants differ from variables?

3.     char s[20] =” Programming in C”;

        scanf(“%s”,s);

        gets(s);

        What will be the output of this program segment?

4.     When can break and continue be used?

5.     What is an index and why does it have to be unique?

6.     Define recursion.

7.     What is the use of ‘*’ and ‘->’ operators in pointers?

8.     How is a structure different from an array?

9.     What is a file?

10.   Mention the use of fprintf and fscanf.

PART – B                       (5 x 12 = 60)

Answer All the Questions

1.     (a)    What is meant by flowchart? Explain the symbols used for
        drawing a flowchart.

        (b)   Write the structure of a C program. Explain it with an 
        example program.

(or)

12.   Explain the various types of operators available with a sample program for each type.

       

13.   (a)    Give the syntax of scanf ( ) and printf ( ) and explain their
        usage in C language.

        (b)   Write a C program to accept numbers from the user until
        their sum exceeds 50.

(or)

14.   Write a C program to find the roots of a quadratic equation. Use switch case.

15.   (a)    Write a C program to find the transpose of a matrix.

        (b)   Assume s1 =” Welcome” s2=”hai”.

                Write a C program to     (i)    find the length of s1.

                                                        (ii)   copy to another string s3

                                                        (iii)  compare s1 with s2

(or)

16.   List the different storage classes available in C. Explain each of them in detail.

17.   (a)    Write a C program to swap two numbers using pointers and
        without using pointers.

        (b)   How can an array of pointers be accessed? With an example
        program, explain in detail.

(or)

18.   Write a structure with following members: student name, student roll no, three subjects marks, total, percentage. Find the sum and percentage of marks for 10 students.

19.   Explain the steps that are followed while accessing a file.

(or)

20.   Explain how random access is done in a file.

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