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CS201 past paper | past paper | current paperLatest Solved Mcqs from Midterm Papers |
May 07,2011 |
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Lectures 1-22 |
Mc100401285 moaaz.pk@gmail.com Moaaz Siddiq Bc100400662 bc100400662asad@gmail.com Asad Ali |
Latest Mcqs |
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MIDTERM EXAMINATION Spring 2010
Question No: 1 ( Marks: 1 ) -
Please choose one In order to get 256 from the number 2568
we divide this number by 10 and take, ► Its remainder ► The number ► Its quotient ► Its divisor
Question No: 2 ( Marks: 1 ) -
Please choose one The correct syntax
of do-while loop
is, ► (condition ) while; do {
statements; }; ► { statements; } do-while (); ► while(condition); do { statements; }; ► do { statements; } while (condition);
Question No: 3 ( Marks: 1 ) - Please
choose one Which of the following function(s) is/are included in stdlib.h
header file?
► double atof(const char *nptr) ► int atoi(const char
*nptr) ► char *strcpy ( char *s1, const char *s2) ► 1 and 2 only
(Pg 191)
Question No: 4 ( Marks: 1 ) -
Please choose one If the break
statement is missed in switch statement then, ► The compiler will give error ► This may cause a logical error (Pg 76) ► No effect on program ► Program stops
its execution |
||
Question No: 5 ( Marks: 1 ) -
Please choose one
The data type before a function name represents its,
► Return Type ( Pg 499)
► Function data
►
Function arguments
►
Function name
Question No: 6 ( Marks: 1 ) - Please choose one
Member function tellg() returns the current location of the _ pointer.
►
tellptr()
►
write()
►
seekg()
► get() (Pg 215)
Question No: 7 ( Marks: 1 ) -
Please choose one
What does 5 | 6 , evaluate to in decimal where ‘|’ is bitwise OR operator?
►
►4
►5
►
5
| 6 =
0 1 0 1
0
1 1 0
--------
0
1 1 1 = 7
Question No: 8 ( Marks: 1 ) - Please choose one
C is widely known as development language of operating system.
►
Linux
►
Windows
► Unix (Pg 12)
► Mac OS
Question No: 9 ( Marks: 1 ) - Please choose one
What will be the result of arithmetic expression 6+27/3*3?
►
33
►
45
► 9
►
30
Question No: 10 ( Marks: 1 ) - Please choose one
How many bytes are occupied by declaring following array of characters?
char str[] = “programming”;
►
10
►
11
► 12
► 13
Question No: 11 ( Marks: 1 ) - Please choose one
What will be the correct syntax for initialization of pointer ptr with string "programming"?
►
char ptr = ’programming’ ;
► char *ptr = “programming” ;
► char *ptr = ‘programming’ ;
►
*ptr = “programming” ;
pg 166
array
element in each array initialized with a single character enclosed in single
quote. pg 21
While assigning a character value to a char type variable single quotes are used around the character as ‘a’.
Question No: 12 ( Marks: 1 ) -
Please choose one
What will be the result of expression x%= 2, if x = 7?
►x = 1
►x = 3
►x = 7
►x = 2
Question No: 13 ( Marks: 1 ) - Please choose one
UNIX has been developed in language.
►JAVA
►B
►C (pg 12)
►FORTRAN
Question No: 14 ( Marks: 1 ) - Please choose one
Declaring structures does not mean that memory is allocated.
►True (Pg 229)
►False
http://www.exforsys.com/tutorials/c-plus-plus/c-structures.html
Question No: 15 ( Marks: 1 ) - Please choose one
What will be the value of
i and j in the following code segment?
int i, j ;
int x[5] = {2, 3, 4, 8, 9} ;
int *ptr =&x[2]; i = (*ptr)++ ;
j = *ptr++ ;
►i = 5, j = 5
►i = 5, j = 8
►i = 4, j = 8
►i = 5, j = 9
Question No: 16 ( Marks: 1 ) - Please choose one
When an array element is passed to a function, it is passed by------------- --.
► reference (Pg 266)
► data type
► value
► data
When
we pass ordinary variables to functions, they are passed by value because of
the default behavior. But when an
array is passed to a function, the default behavior changes and array is passed by reference
MIDTERM EXAMINATION 2010
Question No: 1 ( Marks:
1 ) - Please choose one
What is the output of the following
statement?
int i = 2.5; do { cout i * 2; } while (i > 3 && i < 10);
(a) 510
(b) 5
(c)
48
(d) error
Question No: 2 ( Marks: 1 ) - Please
choose one
What does !(7) evaluate to in decimal where ! is a NOT operator?
(a) 7
(b) 8
(c)
9
(d) 10
Question No: 3 ( Marks: 1 ) - Please
choose one
The condition in while loop may contain logical expression but not relational expression.
(a)
True
(b) False
Question No: 4 ( Marks: 1 ) - Please
choose one
Searching is easier when an array is already sorted
(a) True
(b) False
Question No: 5 ( Marks: 1 ) - Please
choose one
If an array has 100 elements, what is allowable range of subscripts?
(a) 0 - 99
(b) 1 - 99
(c) 0 - 100
(d) 1 - 100
Question No: 6 ( Marks: 1 ) - Please choose one
What will be the value of
‘a’ and ‘b’ after executing
the following statements?
a = 3;
b = a++;
(a) 3, 4
(b) 4, 4
(c) 3, 3
(d) 4, 3
Question No: 7 ( Marks: 1 ) - Please choose one
What will be the correct syntax to initialize all elements of two-dimensional array to value 0? (a) int arr[2][3] = {0,0} ;
(b) int arr[2][3] = {{0},{0}} ;
(c) int arr[2][3] = {0},{0} ;
(d) int arr[2][3] = {0} ;
Question No: 8 ( Marks: 1 ) - Please
choose one
Which of the following functionreturns the size of a string variable?
(a)
strlength()
(b)
stringlen()
(c)
strlen()
(d)
strLength()
When applied to a character array, the strlen function returns the length of the string stored there,
not its
allocated size. http://www.gnu.org/s/hello/manual/libc/String-Length.html
Question No: 9 ( Marks: 1 ) - Please
choose one
What will be the range of numbers generated by function rand () % 9?
(a)
0 to 9
(b) 1 to 9
(c) 0 to 8
(d) 1 to 8
Question No: 11 ( Marks: 1 ) -
Please choose one
Computer can understand only machine language code.
(c) True
(d)
False
Question No: 13 ( Marks: 1 ) -
Please choose one
What does 5 ^ 6 , evaluate to in decimal where ‘^’ is Exclusive OR operator?
(a)
True
(b) False Detail:-
It mean
5 = 0101
6 = 0110
5 ^ 6 = 0011
If both input is same then the output is 0 and if different then output is 1
Question No: 14 ( Marks: 1 ) - Please choose
one
If the file is not properly closed in the program, the program _.
(a)
Terminate normally
(b)
Indicate Runtime error
(c)
Indicate Compile time error
(d)
Crashes
Eventually run out of file handles
and/or memory space and crash.)
http://www.codingunit.com/c-tutorial-file-io-using-text-files
Question No: 15 ( Marks: 1 ) -
Please choose one
Which of the following header file include string conversion functions?
(a)
string.h
(b)
stdlib.h (Pg 190)
(c)
ctype.h
(d)
sconvert.h
MIDTERM EXAMINATION 2009
Question No: 1 ( Marks: 1 ) - Please choose one
A precise sequence of steps to solve a problem is called
Ø Statement
Ø Program
Ø Utility
Ø Routine
Question No: 2 ( Marks: 1 ) - Please choose one
The Compiler of C language is written in
Ø Java Language
Ø UNIX
Ø FORTRON Language
Ø C Language
Question No: 3 ( Marks:
1 ) - Please choose one
Initialization of variable at the time of definition is,
Ø Must
Ø Necessary
Ø Good Programming
Ø None of the given options
Question No: 4 ( Marks: 1 ) - Please choose one
In if structure the block of statements is executed only,
Ø When the condition is false
Ø When it contain arithmetic operators
Ø When it contain logical
operators
Ø When the condition is true
Question No: 6 ( Marks:
1 ) - Please choose one
Dealing with structures and functions passing by reference is the most economical method
Ø True
Ø False
Question No: 7 ( Marks: 1 ) - Please choose one
Pointer is a variable which store,
Ø Data
Ø Memory Address
Ø Data Type
Ø Values
Question No: 8 ( Marks: 1 ) - Please choose one
Preprocessor program perform its function before phase takes place.
Ø Editing
Ø Linking
Ø Compiling
Ø Loading
Question No: 9 ( Marks: 1 ) - Please choose one
Which of the following can not be a variable name?
Ø area
Ø _area
Ø 10area
Ø area2
Question No: 10 ( Marks: 1 ) - Please choose one
Which looping process is best, when the number of iterations is known?
Ø for
Ø while
Ø do-while
Ø all looping processes require
that the iterations be known
Ø
Question No: 11 ( Marks: 1 ) - Please choose one
Which character is inserted at the end of string to indicate the end of string?
Ø new line
Ø tab
Ø null
Ø carriage return
Question No: 13 ( Marks: 1 ) - Please choose one
Which of the following header file defines the rand() function?
Ø iostream.h
Ø conio.h
Ø stdlib.h
Ø stdio.h
Question No: 14 ( Marks: 1 ) - Please choose one
Commenting the code
Ø Makes a program
easy to understand for others.
Ø Make programs heavy, i.e. more space is needed for executable.
Ø Makes it difficult to compile
Ø All of the given options.
Question No: 15 ( Marks: 1 ) - Please choose one
What's wrong with this for loop? for (int k = 2, k <=12, k++)
Ø the increment should always
be ++k
Ø the variable must always
be the letter i when using a for loop
Ø there should be a semicolon
at the end of the statement
Ø the commas should be semicolons
Question No: 16 ( Marks: 1 ) - Please choose one
For which array, the size of the array should be one more than the number of elements in an array?
Ø int
Ø double
Ø float
Ø char
MIDTERM EXAMINATION 2009
Question No: 1 ( Marks: 1 ) - Please choose one
The function
of cin is
► To display message
► To read data from keyboard
► To display output
on the screen
► To send data to printer
Question No: 2 ( Marks: 1 ) - Please choose one
In C/C++ language
the header file which is used to perform useful task and manipulation of character data is
► cplext.h
► ctype.h (Pg 188)
► stdio.h
► delay.h
Question No: 3 ( Marks: 1 ) - Please choose one
How many parameter(s) function
getline() takes?
► 0
► 1
► 2
►
3
The member function getline() also takes
three parameters: the buffer to fill, one more than the maximum number of characters to get, and the termination
character. getline()functions exactly like
get() does with these parameters, except getline() throws away the
terminating character. http://newdata.box.sk/bx/c/htm/ch16.htm
.
Question No: 4 ( Marks: 1 ) - Please choose one
Word processor
is
► Operating system
► Application software
► Device driver
► Utility software
Question No: 5 ( Marks: 1 ) - Please choose one
For which values of the integer
_value will the following code becomes an infinite loop?
int number=1; while
(true) { cout << number;
if (number == 3)
break; number += integer_value; }
► any
number other than 1 or 2
► only 0
► only
1
► only
2
Rational:
number += integer_value................ above line decide the fate of
loop so any thing other then zero leads
to value of 3 which will quite the loop. Only zero is the value which keeps the loop infinite.
Question No: 6 ( Marks: 1 ) - Please choose one
Each pass through a loop is called a/an
► enumeration
► Iteration
► culmination
► pass
through
Question No: 7 ( Marks: 1 ) - Please choose one
A continue
statement causes execution to skip to
► the return 0; statement
►
the first statement after the loop
► the
statements following the continue statement
► the next iteration
of the loop
Continue statement is used, when at a certain stage,
you don’t want to execute
the remaining statements inside your loop and want to go to the start of the loop.
Question No: 8 ( Marks: 1 ) - Please choose one
What is the correct
syntax to declare
an array of size 10 of int data type?
► int [10] name ;
► name[10] int ;
► int name[10] ;
► int name[]
;
Question No: 9 ( Marks: 1 ) - Please choose one
Consider the following code segment. What will the following code segment display?
int main(){
int age[10] = {0}; cout <<
age ;
}
► Values
of all elements of array
► Value of first element of array
►
Starting address
of array
► Address of last array element
Question No: 11 ( Marks:
1 )
- Please choose
one
How many bytes will the pointer
intPtr of type int move in the following
statement?
intPtr
+= 3 ;
►
3
bytes
► 6 bytes
► 12 bytes
► 24 bytes
one int is 4 bytes
so 4*3 = 12 bytes
movement.
Question No: 12 ( Marks:
1 )
- Please choose
one
If there are 2(n+1) elements
in an array then what would be the number
of iterations required
to search a number using binary search algorithm?
►
n elements
► (n+1) elements
► 2(n+1) elements
► 2(n+1) elements
Question No: 13 ( Marks:
1 )
- Please choose
one
Which of the following
operator is used to access the value of variable
pointed to by a pointer?
► * operator
► -> operator
► && operator
►
& operator
Question No: 14 ( Marks:
1 )
- Please choose
one
The statement interrupts the flow of control.
► switch
► continue
► goto
► break
Question No: 15 ( Marks:
1 )
- Please choose
one
Analysis is the-------------- step in designing a program
► Last
► Middle
► Post Design
► First
Analysis will be always followed
by design and then code.
Question No: 16 ( Marks:
1 )
- Please choose
one
Paying attention to detail in designing a program is
► Time
consuming
► Redundant
► Necessary
► Somewhat Good
In programming, the details matter. This is a very
important skill. A good programmer always analyzes
the problem statement very carefully and in detail. You should pay attention to
all the aspects of the problem.
MIDTERM EXAMINATION
Spring 2009
Question No: 1 ( Marks: 1
) -
Please choose one
There are mainly------------------ types of software
► Two
► Three
► Four
► Five
Software is categorized into two main categories
·
System Software
· Application Software
Question No: 2
( Marks: 1 ) - Please choose one
In C/C++ the #include is called,
► Header file
► Preprocessor Directive (Pg 15)
► Statement
► Function
Question No: 3 ( Marks: 1 ) - Please choose one
&& is---------------- operator.
► An arithmetic
► Logical
► Relational
► Unary
we use logical operators ( && and || ) for AND and OR respectively with relational operators.
Question No: 4 ( Marks: 1 ) - Please choose one
In flow chart, the symbol used for decision making is,
► Rectangle
► Circle
► Arrow
► Diamond (Pg 51)
http://www.ehow.com/about_5081911_symbols-used-flowchart.html
Question No: 6 ( Marks: 1
) -
Please choose one
C++ views each file as a sequential stream of .
► Bytes
► Bits
► 0’s or 1’s
► Words
Question No: 7 ( Marks: 1 ) - Please choose one
If the elements of an array are already sorted then the useful search algorithm is,
► Linear search
► Binary search (Pg 188)
► Quick search
► Random search
In binary search algorithm, the ‘divide and conquer’ strategy is applied. This plies only to sorted arrays in ascending or descending order.
Question No: 8
( Marks: 1 ) - Please choose one
The address operator (&) can be used with,
► Statement
► Expression
► Variable
► Constant
Question No: 9 ( Marks: 1
) -
Please choose one
When a pointer is incremented, it actually jumps the number of memory addresses
► According to data type (Pg 160)
► 1 byte exactly
► 1 bit exactly
► A pointer variable can not be incremented
Question No: 11 ( Marks:
1 ) - Please choose one
Call by reference mechanism should be used in a program when there is
i. large amount of data to be passed
ii. small amount of data to be passed
iii. need to change the passed data
iv. no need to change
the passed data
Choose the appropriate option for the above case.
► (i) and (ii) only
► (i) and (iii)
only
► (ii) and (iii) only
► (ii) and (iv) only
Question No: 12 ( Marks:
1 ) - Please choose one
Which of the following is the starting index of an array in C++?
►0
►1
► -1
► any number
Question No: 13 ( Marks: 1 ) - Please choose one
The return type of a function that do not return any value must be
► int
► void
► double
► float
Question No: 14 ( Marks:
1 ) - Please choose one
Which of the following is an extension of header file?
► .exe
► .txt
► .h
► .c
Question No: 15 ( Marks: 1 ) - Please choose one
We want to access array in random order which approach is better?
► Pointers
► Array index (Pg 176)
► Both pointers and array index are better
► None of the given options.
Question No: 16 ( Marks:
1 ) - Please choose one
When we declare a multidimensional array the compiler store the elements of multidimensional array in the form of,
► Columns
► Rows
► Contiguous memory location
(Pg
174)
► Matrix
MIDTERM EXAMINATION 2009
Question No: 1 ( Marks: 1 ) - Please
choose one In C/C++ the string constant
is enclosed
►
In curly braces
►
In small braces
►
In single
quotes
► In double quotes http://www.lugaru.com/man/String.Constants.html
Question No: 2 ( Marks: 1 ) - Please
choose one The size of int data type is
►
1 bytes
►
2
bytes
►
3
bytes
► 4 bytes (Pg 257)
Question No: 3 ( Marks: 1 ) - Please
choose one In Flow chart process is represented by
► Rectangle (Pg 51)
►
Arrow symbol
►
Oval
►
Circle
Question No: 5 ( Marks: 1 ) - Please choose
one
When we are using
const keyword with a variable
x then initializing it at the time of declaration is,
► Must
►
Optional
►
Not necessary
►
A syntax error
Question No: 6 ( Marks: 1 ) - Please choose
one
Which of the following
is the correct way to assign an integer value 5 to element of a matrix
say ‘m’ at second row and third column?
► m[2][3] = 5 ;
►
m[3][2] = 5 ;
►
m[1][2] = 5 ;
►
m[2][3] = ‘5’;
Question No: 7 ( Marks: 1 ) - Please choose
one
How many total elements
must be in two-dimensional array of 3 rows and 2 columns?
►
4
►
5
► 6 (3*2=6)
►
7
Question No: 8 ( Marks: 1 ) - Please choose one
Which of the following is the correct statement for the following declaration?
const
int *ptr.
Ø ptr is a constant
pointer
Ø ptr is constant integer
pointer
Ø ptr is a constant pointer to int
Ø ptr is a pointer to const int http://www.allinterview.com/showanswers/65662.html
Question No: 9 ( Marks: 1 ) - Please choose
one
Consider the following code segment. What will be the output
of this code segment? int arr[6] = {2, 3, 7, 4, 5, 6} ;
int *ptr1
=&arr[1] ; int *ptr2 = &arr[4]
; cout << (ptr2-ptr1) ;
►
3
►
9
►
12
► 2
Question No: 10 ( Marks:
1 ) - Please choose one
What will be the correct syntax
to assign an array named arr of 5 elements
to a pointer ptr?
►
*ptr = arr ;
►ptr = arr ;
►*ptr = arr[5]
;
►ptr = arr[5]
;
Question No: 11 ( Marks: 1 ) - Please choose
one C is a/an language
►low level
►object based
►
object oriented
► function oriented (Pg 77)
Question No: 13 ( Marks:
1 ) - Please choose one
The variables
having a name, type and size are just like empty boxes.
►
False
► True
Question No: 15 ( Marks:
1 ) - Please choose one
Most efficient
method of dealing
with structure variables is to define
the structure globally
► True http://mathbits.com/mathbits/compsci/Structures/Define.htm
►
False
Question No: 16 ( Marks: 1 ) - Please choose one Syntax of union is identical to
► Structure (pg 242)
►
Class
►
Function
►
None of the given options
MIDTERM EXAMINATION
2008
Question No: 16 ( Marks: 1 ) - Please choose one
In Program commenting the code liberally is
► Useful.
► Time consuming
► Not necessary
Question :If we want to store a string “abc” in an array str then the size of this array must be at least,
(a)
2
(b) 3
(c)
4
(d) 5
Question :How many bytes
will the pointer
intPtr of type int move in the following statement?
intPtr += 3 ;
(a) 3 bytes
(b) 6 bytes
(c) 12 bytes
(d) 24 bytes
MIDTERM EXAMINATION
2007
Question:The remainder (%) operator is,
►
An arithmetic operator (Pg 258)
► A logical operator
► A relational operator
► A division operator
Question: When a call to function statement is encountered,
► The control is transferred
to its Prototype
► The control is transferred to its definition
► The compiler stop execution of the whole program
► The program hangs
MIDTERM EXAMINATION
2006
Question : The value of 2*15/3*7+3*2 is
Ø 146
Ø 76
Ø 8
Ø 70
Question: Carefully analyze the following lines of code and choose the correct
option.
ch1=”a”;
ch2=’a’;
Ø ch1 and ch2 are strings
Ø ch1 is string
and ch2 is character
Ø ch2 is string and ch1 is character
Ø ch1 and ch2 are characters
Question :The size of a double variable is
Ø 2 bytes
Ø 4 bytes
Ø 8 bytes
Ø 10 bytes
The size of an int is: 4 bytes. The size of a short int is: 2 bytes. The size of a long int is: 4 bytes. The size of a char is: 1 bytes. The size of a float is: 4 bytes. The size of a double is: 8 bytes.