M3-R4: JANUARY 2011, DOEACC O LEVEL, C LANGUAGE PROGRAMMING ANSWER, CONDUCTED BY NIELIT.

    "O" level course of DOEACC Scheme is equivalent to a Foundation Level Course in Computer Applications. Students can acquire this qualification by undergoing this course and passing the examination conducted by the NIELIT.

1.       Each question below gives a multiple choice of answer. (1x10)

1.1 ‘C’ Programming Language was developed and written by

A) Martin Richards

B) Dennis Ritchie

C) Ken Thompson

D) Herman Hellorith

1.2 Which of the following is false in ‘C’ Programming Language

A) Keywords can be used as variable names

B) Variable names can contain digits

C) Variable names do not contain blank spaces

D) Capital letters can be used in variable names.

1.3 What will be the output of the following ‘C’ program

main()

{

int a=5;

float b=5.0;

if(a==b)

printf(“a and b are equal”);

else

printf(“a and b are different”);

}

A) a and b are equal

B) a and b are different

C) Error

D) None of the above

1.4 What will be the output of the following ‘C’ program?

main()

{

int a=1;

int b=5;

if(a=5||b>10)

printf(“I will certainly pass”);

else

printf(“I am not so sure about the result”);

}

A) I will certainly pass

B) I am not so sure about the result

C) Error

D) None of the above

1.5 What will be the output of the following program?

main()

{

int a;

printf(“%d”,a);

}

A) 0

B) 1

C) Error

D) Unpredictable Value

1.6 A ‘C’ expression contains relational, assignment and arithmetic operators. There are no

parentheses used. They will be evaluated in which of the following order

A) Assignment Relational Arithmetic

B) Arithmetic Relational Assignment

C) Relational Arithmetic Assignment

D) Assignment Arithmetic Relational

1.7 Prototype of function named ‘fun’ is: int fun(int a, float b) Which of the following is

true about function ‘fun’:

A) It takes two inputs, one integer type and the other float type but returns nothing

B) It takes two inputs, one integer type and the other float type but returns 0

C) It takes two inputs, one integer type and the other float type but returns an integer

D) It takes two inputs, one integer type and the other integer type but returns float

1.8 What will happen if an element is assigned a value to an element of an array whose

subscript exceeds the size of the array

A) It will not be allowed, but no error message will be generated

B) Compiler will generate an error message suggesting the same

C) The element will be assigned NULL VALUE.

D) Some other data may be overwritten

1.9 In the following ‘C’ code

{

FILE *f = fopen( fileName, "r");

fread(f);

if(????)

puts(“End of file reached”);

}

Which one of the following can replace the ???? in the code above to determine if the end of

a file has been reached?

A) f == EOF

B) feof( f )

C) eof( f )

D) f == NULL

1.10 With every use of a memory allocation function, what function should be used to release

allocated memory which is no longer needed?

A) unalloc()

B) Dropmem()

C) Dealloc()

D) free()

2. Each statement below is either TRUE or FALSE. Choose the most appropriate one

and ENTER in the “tear-off” sheet attached to the question paper, following

instructions therein. (1x10)

2.1 A structure can contain pointer to itself.TRUE

2.2 Size of all elements in a union should be same.FALSE

2.3 Size of a pointer is equal to the data type it points to. FALSE

2.4 In ‘C’, the compiler does not check if the subscript used for an array exceeds size of the

array. TRUE

2.5 A ‘for’ loop in ‘C’ has three statements, namely, assignment, test and increment statements. TRUE

2.6 cout and cin can be used for output and input respectively in ‘C’ language. FALSE

2.7 The default initial value of a static int variable is zero. TRUE

2.8 Binary search can be easily performed on a linked list. FALSE

2.9 A function name can be passed as an argument to another function. TRUE

2.10 A ‘C’ function can contain many return statements. FALSE

3. Match words and phrases in column X with the closest related meaning/

word(s)/phrase(s) in column Y. Enter your selection in the “tear-off” answer sheet

attached to the question paper, following instructions therein. (1x10)

 

K. array L. * M. break J. main(). I. Will be there if start== is true. H. Executed at least once G. Case control structure F. Persists between different function calls E. The same data types placed in contiguous memory locations C. To clear the specified buffer A. Directives B. You cannot find its address D. continue

3.1 Do-while loop is H                                                

3.2 This loop control structure takes you to the

beginning of the loop D

3.3 This is a mandatory function in every ‘C’

program. Execution starts from this function J

3.4 Value of static storage variable F

3.5 Preprocessor commands are also known as A

3.6 An array is a collection of E

3.7 The condition that a linked list is empty I

3.8 If ‘x’ is a variable of storage class register B

3.9 If you have to use many if-else conditions,

they can be usually implemented by G

3.10 The purpose of library function fflush() is C

4. Each statement below has a blank space to fit one of the word(s) or phrase(s) in the

list below. Enter your choice in the “tear-off” answer sheet attached to the question

paper, following instructions therein. (1x10)

A. \b B. alloc.h C. 1 byte

D. stdio.h E. CPU Registers F. &&

G. fclose() H. 65 I. An Error

J. Array of characters K. \a L. &

M. ==

4.1 Logical AND operator is denoted by ____F____.

4.2 Size of char data type is ____C____.

4.3 The variables of storage class register are stored in ____E____.

4.4 If you try to multiply or add two pointers, it will result in ____I____.

4.5 In ‘C’, strings are stored in the form of ___J_____.

4.6 Escape sequence for backspace is ____A____.

4.7 Function used to close a file is ____G_____.

4.8 The header file which must be included, if you want to use malloc() or calloc() is

___B_____.

4.9 The macro FILE is defined in header file ___D_____.

4.10 The ASCII value, in decimal, of character ‘A’ is ____H____.