Solved : NIELIT (O-Level) PROGRAMMING & PROBLEM SOLVING THROUGH ‘C’ LANGUAGE , January 19
1.Each question below gives a multiple choice of answers. Choose the most appropriate one and enter in the “OMR” answer sheet supplied with the question paper, following instructions therein. (1x10=10)
1.1 : Which of the following is the correct order of evaluation for the below expression ?
(A) * / % + – = (B) = * / % + –
(C) / * % – + = (D) * % / – + =
Answer
Answer
1.2 : Which of the following is true for variable names in C ?
(A) They can contain alphanumeric characters as well as special characters.
(B) It is not an error to declare a variable to be one of the keywords (like goto, static).
(C) Variable names cannot start with a digit.
(D) Variable can be of any length.
1.3 : What is the output of this C code ?
#include <stdio.h>
int main( )
{
int x = 2, y = 0;
int z = y && (y |= 10);
printf("%d\n", z);
return 0;
}
(A) 1
(B) 0
(C) Undefined behaviour due to order of evaluation
(D) 2
1.4 : Point out the error if any, in the while
loop :
main( )
{
int i=1;
while ( )
{
printf(“%d”,i++);
if( i > 10)
break;
}
}
(A) The condition in while loop is must
(B) There should be a semicolon in the while loop
(C) The while loop should be replaced by for loop
(D) No error
1.5 : What is right way to initialize arrays ?
(A) intnum[6]={2,4,12,5,45,5};
(B) int n{ }={2,4,12,5,45,5};
(C) int n{6}={2,4,12};
(D) int n(6)={2,4,12,5,45,5};
1.6 : In C, if you pass an array as an argument to a function, what actually gets passed ?
(A) Value of elements in array
(B) First element of array
(C) Base address of array
(D) Address of the last element of array
1.7 : # include <stdio.h>
void fun(int *ptr)
{
*ptr = 30;
}
int main( )
{
int y = 20;
fun(&y);
printf("%d", y);
return 0;
}
The output of above program is :
(A) 20 (B) 30
(C) Compiler error (D) Runtime error
1.8 : If the two strings are identical, then strcmp( ) function returns
(A) –1 (B) 1
(C) 0 (D) infinity
1.9 : What is the maximum number of dimensions an array in C may have ?
(A) 2
(B) 8
(C) 20
(D) Theoretically no limits. The only practical limits are memory and compilers.
1.10 : Is the following statement declaration or
definition :
extern int i;
(A) Declaration (B) Definition
(C) Function (D) Error
2. Each statement below is either TRUE or FALSE. Choose the most appropriate one and enter your choice in the “OMR” answer sheet supplied with the question paper, following instructions therein.
(1x10=10)
2.1 : The expressions *ptr++ and ++*ptr are same.
2.2 C provides the strcmp ( ) function to compare strings.
2.3 A function cannot be defined inside another function.
2.4 Goto can be used to jump from main function to other function.
2.5 The default parameter passing mechanism is call by value.
2.6 The expressions arr and &arr same for an array of 10 integers.
2.7 Memory allocation can be done by using keyword ‘create’.
2.8 The expressions int fun(intarr[]); and int fun(intarr[2]); are same.
2.9 There can be two return statements inside a function.
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 “OMR” answer sheet supplied with the question paper, following instructions therein. (1x10=10)
X
|
Y
|
||
3.1
|
For is
|
A.
|
is another name for a variable
|
3.2
|
Float
|
B.
|
more priority than +
|
3.3
|
Reference
|
C.
|
cannot return array
|
3.4
|
# define directive
|
D.
|
is not a correct variable type
|
3.5
|
enum is
|
E.
|
an entry controlled loop
|
3.6
|
Function
|
F.
|
is
used to signal the beginning and end of code blocks
|
3.7
|
Logical OR Operator
|
G.
|
defines a macro
|
3.8
|
* has
|
H.
|
is a keyword
|
3.9
|
Real
|
I.
|
function all C programs must contain
|
3.10
|
Comments in
‘C’
|
J.
|
is the correct operator to compare two variables
|
K.
|
user defined data type
|
||
L.
|
/* */
|
||
M.
|
||
|
||
4. Each statement below has a blank space to fit one of the word(s) or phrase(s) in the list below. Choose the most appropriate option, enter your choice in the “OMR” answer sheet supplied with the question paper, following instructions therein.
A.
|
Return
|
B.
|
Global
|
C.
|
Sequential
|
D.
|
Infinite
|
E.
|
do-while
|
F.
|
Union
|
G.
|
Null
|
H.
|
Ternary
|
I.
|
integer
|
J.
|
Pointer
|
K.
|
Auto
|
L.
|
prototype
|
M.
|
Argument
|
4.1
An array elements are always stored in order.
4.2
The value obtained in the function is given back to main by using
keyword.
4.3
By default, storage class of local variable
is .
4.4
loop can be terminated using
break statement.
4.5
is a variable which holds
the address of another variable.
4.6
Variables that are
alive and active
throughout the program
are called
variables.
4.7
is an exit control loop.
4.8
A pointer that does not point to any data object is .
4.9
The conditional operator (?:) is a .
PART TWO
(Answer any FOUR )
5.
(c) Write a program to print all prime numbers from 1 to 100. Use nested loops, break or continue statement wherever necessary. (6+4+5=15)
6.
(b) What will be the output of the following program segment ?
main( )
{
int x=3,y=5;
if(x= =3) printf(“\n%d”,x);
else; printf(“\n%d”,y);
}
Answer : 5
Answer : 5
7.
(5+5+5=15)
8.
(a) Write a program to add a new node to the beginning of a linked list and to the end of linked list.
(b) What is a file in C ? Discuss various modes in which a file can be opened. Also discuss types of files.
(7+8=15)
9.
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