Set 1
Question
1.
What is the correct value to return
to the operating system upon the successful completion of a program?
A. -1
B. 1
C. 0
D. Programs do not return a value.
A. -1
B. 1
C. 0
D. Programs do not return a value.
Question
2.
What is the only function all C++
programs must contain?
A. start()
B. system()
C. main()
D. program()
A. start()
B. system()
C. main()
D. program()
Question
3.
What punctuation is used to signal
the beginning and end of code blocks?
A. { }
B. -> and <-
C. BEGIN and END
D. ( and )
A. { }
B. -> and <-
C. BEGIN and END
D. ( and )
Question
4.
What punctuation ends most lines of
C++ code?
A. . (dot)
B. ; (semi-colon)
C. : (colon)
D. ' (single quote)
A. . (dot)
B. ; (semi-colon)
C. : (colon)
D. ' (single quote)
Question
5.
Which of the following is a correct
comment?
A. */ Comments */
B. ** Comment **
C. /* Comment */
D. { Comment }
A. */ Comments */
B. ** Comment **
C. /* Comment */
D. { Comment }
Question
6.
Which of the following is not a correct
variable type?
A. float
B. real
C. int
D. double
A. float
B. real
C. int
D. double
Question
7.
Which of the following is the
correct operator to compare two variables?
A. :=
B. =
C. equal
D. ==
A. :=
B. =
C. equal
D. ==
Question
8.
Which of the following is true?
A. 1
B. 66
C. .1
D. -1
E. All of the above
A. 1
B. 66
C. .1
D. -1
E. All of the above
Question
9.
Which of the following is the
boolean operator for logical-and?
A. &
B. &&
C. |
D. |&
A. &
B. &&
C. |
D. |&
Question
10.
Evaluate !(1 && !(0 || 1)).
A. True
B. False
C. Unevaluatable
A. True
B. False
C. Unevaluatable
Scroll Down for answers
Answers
1. C. 0
2. C. main()
3. A. { }
4. B. ;
5. C. /* Comment */
6. B. real
7. D. ==
8. E. All of the above
9. B. &&
10. A. True
Set 2
Questions
Question
1
Identify the correct statement
a. Programmer can use comments to
include short explanations within the source code itself.
b. All lines beginning with two
slash signs are considered comments.
c. Comments very important effect on
the behaviour of the program
d. both
Question
2
The directives for the preprocessors
begin with
a. Ampersand
symbol (&
b. Two Slashes
(//)
c. Number Sign (#)
d. Less than
symbol (<
Question
3
The file iostream includes
a. The
declarations of the basic standard input-output library.
b. The streams of
includes and outputs of program effect.
c. Both of these
d. None of these
Question
4
There is a unique function in C++
program by where all C++ programs start their execution
a. Start()
b. Begin()
c. Main()
d. Output()
Question
5
Every function in C++ are followed
by
a. Parameters
b. Parenthesis
c. Curly braces
d. None of these
Question
6
Which of the following is false?
a. Cout represents
the standard output stream in c++.
b. Cout is
declared in the iostream standard file
c. Cout is
declared within the std namespace
d. None of above
Question
7
Every statement in C++ program
should end with
a. A full stop (.)
b. A Comma (,)
c. A Semicolon (
d. A colon (
Question
8
Which of the following statement is
true about preprocessor directives?
a. These are lines
read and processed by the preprocessor
b. They do not
produce any code by themselves
c. These must be
written on their own line
d. They end with a
semicolon
Question
9
A block comment can be written by
a. Starting every
line with double slashes (//)
b. Starting
with /* and ending with */
c. Starting with
//* and ending with *//
d. Starting with
<!- and ending with -!>
Question
10
When writing comments you can
a. Use code
and /* comment on the same line
b. Use code and //
comments on the same line
c. Use code and
//* comments on the same line
d. Use code and
<!- comments on the same line
Answers
1. b. All
lines beginning with two slash signs are considered comments.
2. c. Number Sign
(#)
3. a. The
declarations of the basic standard input-output library.
4. c. Main()
5. b. Parenthesis
6. d. None of
above
7. c. A semicolon
8. d. They end
with a semicolon
9. b.
Starting with /* and ending with */
10. b. Use code
and // comments on the same line
Set 3
Questions
Question
1
A variable is/are
a. String that
varies during program execution
b. A portion of
memory to store a determined value
c. Those numbers
that are frequently required in programs
d. None of these
Question
2
Which of the following can not be
used as identifiers?
a. Letters
b. Digits
c. Underscores
d. Spaces
Question
3
Which of the following identifiers
is invalid?
a. papername
b. writername
c. typename
d. printname
Question
4
Which of the following can not be
used as valid identifier?
a. bitand
b. bittand
c. biand
d. band
Question
5
The difference between x and ‘x’ is
a. The first one
refers to a variable whose identifier is x and the second one refers to the
character constant x
b. The first one
is a character constant x and second one is the string literal x
c. Both are same
d. None of above
Question
6
Which of the following is not a
valid escape code?
a. \t
b. \v
c. \f
d. \w
Question
7
Which of the following statement is
true?
a. String Literals
can extend to more than a single line of code by putting a backslash sign at
the end of each unfinished line.
b. You can also
concatenate several string constants separating them by one or several blank
spaces, tabulators, newline or any other valid blank character
c. If we want the
string literal to explicitly made of wide characters, we can precede the
constant with the L prefix
d. All of above
Question
8
Regarding #difine which of the
following statement is false?
a. It is not C++
statement but the directive for the preprocessor
b. This does not
require a semicolon at the end of line
c. It is a C++
statement that declares a constant in C++
d. None of the
above
Question
9
Regarding following statement
which of the statements is true?
const int pathwidth=100;
a. Declares a
variable pathwidth with 100 as its initial value
b. Declares a
construction pathwidth with 100 as its initial value
c. Declares a
constant pathwidth whose value will be 100
d. Constructs an
integer type variable with pathwidth as identifier and 100 as value
Question
10
In an assignment statement
a. The lvalue must
always be a variable
b. The rvalue
might be a constant, a variable, an expression or any combination of these
c. The assignment
always takes place from right to left and never the other way
d. All of above
Answers
1. b. A portion
of memory to store a determined value
2. d.
Spaces
3. c. Typename
4. a. Bitand
5. a. The
first one refers to a variable whose identifier is x and the second one refers
to the character constant x
6. d. \w
7. d. All of
above
8. c. It is
a C++ statement that declares a constant in C++
9. c. Declares a
constant pathwidth whose value will be 100
10. d. All of above
Set 4
Questions
Question
1
In an assignment statement
a=b;
Which of the following statement is
true?
a. The variable a
and the variable b are equal.
b. The value of b
is assigned to variable a but the later changes on variable b will not effect
the value of variable a
c. The value of b
is assigned to variable a and the later changes on variable b will effect the
value of variable a
d. The value of
variable a is assigned to variable b and the value of variable b is assigned to
variable a.
Question
2
All of the following are valid
expressions in C++
a = 2 + (b = 5);
a = b = c = 5;
a = 11 % 3
a. True
b. False
Question
3:
To increase the value of c by one
which of the following statement is wrong?
a. c++;
b. c = c + 1;
c. c + 1 => c;
d. c += 1
Question
4:
When following piece of code is
executed, what happens?
b = 3;
a = b++;
a. a contains 3
and b contains 4
b. a contains 4
and b contains 4
c. a contains 4
and b contains 3
d. a contains 3
and b contains 3
Question
5:
The result of a Relational operation
is always
a. either True or
False
b. is less than or
is more than
c. is equal or
less or more
d. All of these
Question
6:
Which of the following is not a
valid relational operator?
a. ==
b. =>
c. >=
d. >=
Question
7:
What is the final value of x when
the code int x; for(x=0; x<10; x++) {} is run?
A. 10
B. 9
C. 0
D. 1
Question
8:
When does the code block following
while(x<100) execute?
A. When x is less than one hundred
B. When x is greater than one
hundred
C. When x is equal to one hundred
D. While it wishes
Question
9:
Which is not a loop structure?
A. for
B. do while
C. while
D. repeat until
Question
10:
How many times is a do while loop
guaranteed to loop?
A. 0
B. Infinitely
C. 1
D. Variable
Answers
1. b. The value of
b is assigned to variable a but the later changes on variable b will not effect
the value of variable a
2. a. True
3. c. c + 1 =>
c;
4. a. a contains 3
and b contains 4
5. a. either True
or False
6. b. =>
7. A. 10
8. A. When x is
less than one hundred
9. D. Repeat Until
10. C. 1
Set 5
Questions
Question
1
Streams are
a.
Abstraction
to perform input and output operations in sequential media
b.
Abstraction
to perform input and output operations in direct access media
c.
Objects
where a program can either insert or extract characters to and from it
d.
Both a and c
Question
2
Which of the
following is known as insertion operator?
a.
^
b.
v
c.
<<
d.
>>
Question
3:
Regarding
the use of new line character (/n) and endl manipulator with cout
statement
a.
Both ways
are exactly same
b.
Both are
similar but endl additionally performs flushing of buffer
c.
endl can’t
be used with cout
d.
\n can’t be
used with cout
Question
4:
Which of the
following is output statement in C++?
a.
print
b.
write
c.
cout
d.
cin
Question
5:
Which of the
following is input statement in C++?
a.
cin
b.
input
c.
get
d.
none of above
Question
6:
By default,
the standard output device for C++ programs is
a.
Printer
b.
Monitor
c.
Modem
d.
Disk
Question
7:
By default,
the standard input device for C++ program is
a.
Keyboard
b.
Mouse
c.
Scanner
d.
None of
these
Question
8:
Which of the
following statement is true regarding cin statement?
a.
cin
statement must contain a variable preceded by >> operator
b.
cin does not
process the input until user presses RETURN key
c.
you can use
more than one datum input from user by using cin
d.
all of above
Question
9:
Which of the
following is extraction operator in C++?
a.
^
b.
v
c.
<<
d.
>>
Question
10:
When
requesting multiple datum, user must separate each by using
a.
a space
b.
a tab
character
c.
a new line
character
d.
all of above
Answers
1.
d. Both a
and c
2.
c. <<
3.
b. Both are
similar but endl additionally performs flushing of buffer
4.
c. Cout
5.
a. Cin
6.
b. Monitor
7.
a. Keyboard
8.
d. All of
above
9.
d. >>
10.
d. all of
above
Set 6
Questions
Question
1:
cin extraction stops execution as
soon as it finds any blank space character
a.
true
b.
false
Question
2:
Observe the following statements and
decide what do they do.
string mystring;
getline(cin, mystring);
a.
reads a line of string from cin into mystring
b.
reads a line of string from mystring into cin
c.
cin can’t be used this way
d.
none of above
Question
3:
Regarding stringstream identify the
invalid statement
a.
stringstream is defined in the header file <sstream>
b. It
allows string based objects treated as stream
c.
It is especially useful to convert strings to numerical values and vice versa.
d.
None of above
Question
4:
Which of the header file must be
included to use stringstream?
a.
<iostream>
b.
<string>
c.
<sstring>
d.
<sstream>
Question
5:
Which of the following header file
does not exist?
a.
<iostream>
b.
<string>
c.
<sstring>
d.
<sstream>
Question
6:
If you use same variable for two
getline statements
a.
Both the inputs are stored in that variable
b. The
second input overwrites the first one
c.
The second input attempt fails since the variable already got its value
d. You
can not use same variable for two getline statements
Question
7:
The “return 0;” statement in main
function indicates
a.
The program did nothing; completed 0 tasks
b. The
program worked as expected without any errors during its execution
c.
not to end the program yet.
d.
None of above
Question
8:
Which of the following is not a
reserve keyword in C++?
a.
mutable
b.
default
c.
readable
d.
volatile
Question
9:
The size of following variable is
not 4 bytes in 32 bit systems
a.
int
b.
long int
c.
short int
d.
float
Question
10:
Identify the correct statement
regarding scope of variables
a.
Global variables are declared in a separate file and accessible from any
program.
b.
Local variables are declared inside a function and accessible within the
function only.
c.
Global variables are declared inside a function and accessible from anywhere in
program.
d.
Local variables are declared in the main body of the program and accessible
only from functions.
Answers
1.
a. True
2.
a. Reads a line of string from cin into mystring
3.
d. None of above
4.
d. <sstream>
5.
c. <sstring>
6.
b. The second input overwrites the first one
7.
b. The program worked as expected without any errors during its execution
8.
c. readable
9.
c. short int
10 b.
Local variables are declared inside a function and accessible within the
function on
Set 7
Questions
Question 1:
Find out the
error in following block of code.
If (x = 100)
Cout << “x is 100”;
a.
100 should
be enclosed in quotations
b.
There is no
semicolon at the end of first line
c.
Equals to operator
mistake
d.
Variable x
should not be inside quotation
Question 2:
Looping in a
program means
a.
Jumping to
the specified branch of program
b.
Repeat the
specified lines of code
c.
Both of
above
d.
None of
above
Question 3:
The
difference between while structure and do structure for looping is
a.
In while
statement the condition is tested at the end of first iteration
b.
In do
structure the condition is tested at the beginning of first iteration
c.
The do structure
decides whether to start the loop code or not whereas while statement decides
whether to repeat the code or not
d.
In while
structure condition is tested before executing statements inside loop whereas
in do structure condition is tested before repeating the statements inside loop
Question 4:
Which of the
following is not a looping statement in C?
a.
while
b.
until
c.
do
d.
for
Question 5:
Which of the
following is not a jump statement in C++?
a.
break
b.
goto
c.
exit
d.
switch
Question 6:
Which of the
following is selection statement in C++?
a.
break
b.
goto
c.
exit
d.
switch
Question 7:
The continue
statement
a.
resumes the
program if it is hanged
b.
resumes the
program if it was break was applied
c.
skips the
rest of the loop in current iteration
d.
all of above
Question 8:
Consider the
following two pieces of codes and choose the best answer
Code 1:
switch (x) {
case
1:
cout <<”x is 1”;
break;
case 2:
cout <<”x is 2”;
break;
default:
cout <<”value of x unknown”;
}
Code 2
If (x==1){
Cout <<”x is 1”;
}
Else if
(x==2){
Cout << “x is 2”;
}
Else{
Cout <<”value of x unknown”;
}
a.
Both of the
above code fragments have the same behaviour
b.
Both of the
above code fragments produce different effects
c.
The first
code produces more results than second
d.
The second
code produces more results than first.
Question 9:
Observe the
following block of code and determine what happens when x=2?
switch (x){
case 1:
case 2:
case 3:
cout<< "x is 3, so jumping to third branch";
goto thirdBranch;
default:
cout<<"x is not within the range, so need to say Thank You!";
}
a.
Program
jumps to the end of switch statement since there is nothing to do for x=2
b.
The code
inside default will run since there is no task for x=2, so, default task is run
c.
Will display
x is 3, so jumping to third branch and jumps to thirdBranch.
d.
None of
above
Question 10
Which of the
following is false for switch statement in C++?
a.
It uses
labels instead of blocks
b.
we need to
put break statement at the end of the group of statement of a condition
c.
we can put
range for case such as case 1..3
d.
None of
above
Answers
1.
c. Equals to operator mistake
2.
b. Repeat
the specified lines of code
3.
In while
structure condition is tested before executing statements inside loop whereas
in do structure condition is tested before repeating the statements inside loop
4.
b. Until
5.
d. Switch
6.
d. Switch
7.
c. skips the
rest of the loop in current iteration
8.
a. Both of
the above code fragments have the same behaviour
9.
c. Will
display x is 3, so jumping to third branch and jumps to thirdBranch
1.
c. we can
put range for case such as case 1..3
Set 8
Questions
Question
1:
The void specifier is used if a
function does not have return type.
a.
True
b.
False
Question
2:
You must specify void in parameters
if a function does not have any arguments.
a.
True
b.
False
Question
3:
Type specifier is optional when
declaring a function
a.
True
b.
False
Question
4:
Study the following piece of code
and choose the best answer
int x=5, y=3, z;
a=addition(x,y)
a.
The function addition is called by passing the values
b. The
function addition is called by passing reference
Question
5:
In case of arguments passed by
values when calling a function such as z=addidion(x,y),
a.
Any modifications to the variables x & y from inside the function will not
have any effect outside the function.
b. The
variables x and y will be updated when any modification is done in the function
c.
The variables x and y are passed to the function addition
d.
None of above are valid.
Question
6:
If the type specifier of parameters
of a function is followed by an ampersand (&, that function call is
a.
pass by value
b.
pass by reference
Question
7:
In case of pass by reference
a.
The values of those variables are passed to the function so that it can
manipulate them
b. The
location of variable in memory is passed to the function so that it can use the
same memory area for its processing
c.
The function declaration should contain ampersand (& in its type declaration
d. All
of above
Question
8:
Overloaded functions are
a.
Very long functions that can hardly run
b. One
function containing another one or more functions inside it.
c.
Two or more functions with the same name but different number of parameters or
type.
d.
None of above
Question
9:
Functions can be declared with
default values in parameters. We use default keyword to specify the value of
such parameters.
a.
True
b.
False
Question
10:
Examine the following program and
determine the output
#include <iostream>
using namespace std;
int operate (int a, int b)
{
return (a * b);
}
float operate (float a, float b)
{
return (a/b);
}
int main()
{
int x=5, y=2;
float n=5.0, m=2.0;
cout << operate(x,y) <<"\t";
cout << operate (n,m);
return 0;
}
a.
10.0 5.0
b.
5.0 2.5
c.
10.0 5
d.
10 2.5
Answers
1.
a. True
2.
b. False [ parameters can be empty without void too!]
3.
b. False
4.
a. The function addition is called by passing the values
5.
a. Any modifications to the variables x & y from inside the function will
not have any effect outside the function
6.
b. pass by reference
7.
b. The location of variable in memory is passed to the function so that it can
use the same memory area for its processing
8.
d. None of above
9.
b. False
10. d.
10 2.5
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