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which do you prefer VB or C#? why?

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C++ HW help
C++ HW help
The following questions are true/false and multiple choice. PLEASE HELP! 1. Every C++ program must have:
A. cout statement B. function main
C. #include statement D. All of the above
2. The following data : 72
'A' "Hellow" 2.87
are examples of
A. variables
B. literals
C.
strings D. None of the above
3. int
x;
int y
= 4;
long z = 7;
Which
statement forces the compiler to perform automatic
promotion?
A. z
= z + y B. x = y + (int)z;
C. x = (int)z; D. None of the above
4. What is the error ?
int schedule( char activity )
{
int i, activity;
float time;
// code
}
A. This is a function call and not a function
definition.
B. No error.
C. Variable activity cannot be
re-declared.
D. Missing semicolon.
5. What is printed by the following program
segment ?
int x;
x = 4 * (2 + 5)/9 + 3;
cout << "The result is "
<< x;
A. The result is 3. B. The result is 6.
C. The result is 5. D. The result is 4.
6. cout << 'A';
What is the displayed result of the above
statement?
A. 'A'
B. A compiler error C. 65 D. A E. 1
7. int x;
int y;
const
int z = 0;
Which
statement will cause a compile error?
A. x
= y = z; B. x = z = y; C. x = y = 'A'; D. x = y = 10000;
8. int x = 4;
int y;
y =
x++ + 1;
What is the value of variable y after the
above statement executes?
A. 4 B. 5 C.
6 D. 7 E.
None of the above
9. int x = 4;
int y;
y =
--x + 1;
What
is the value of variable y after the above statement executes?
A. 4 B.
5 C.
6 D. 7 E.
None of the above
10. int x = 4;
int y;
y =
++(x + 1);
What
is the result of an attempt to compile and run the
above
statements?
A. 4 B. 5 C. 6 D. 7
E. A compile error
11. int x = 11;
double y;
y =
(double)x / 3;
What
is the value of variable y after the above statement executes?
A. 3 B. 3.66667 C. 4 D.
None of the above
12. int x = 11;
int
y;
y = x % 3;
What is the value of variable y after the
above statement executes?
A. 3
B.2.2 C. 2 D. 3.33
E. None of the above
13. int x;
main()
{
int y;
}
What is true regarding the scope of x and y
?
A. x is local; y is global B. x and y are both local
C. x and y are both static D. x is global; y is local
14. Assuming x starts with the
value 10, what will the following
code fragment print out ?
cout
<< x-- << ' ';
cout
<< ++x;
A. 9
10 B. 10 10 C. 10
9 D. none of the above
15. Executing the
"continue" statement from within a loop
causes control to go
A. to the next line of code
B. out of the loop
C. to the beginning of the loop
D. to check the loop condition for
repeating the loop
E. none of the above
16. Overloaded functions
A. are a group of functions with the same
name and same
number of arguments.
B. are a group of functions with the same
name and
different parameter types.
C. make life easier for the programmer.
D. none of the above.
17. The following statements,
using manipulators fixedpoint and showpoint:
double half = 20.0;
cout << fixedpoint << showpoint
<< half << endl;
is syntactically correct.
T__
F__
18. The following two
implementations perform the same operation:
q = x < y ? a+b : x*2;
if( x < y )
q = a + b;
else
q = x*2;
T__
F__
19. x != y is the same as (x
>y || x<y)
T__
F__
20. y < x is the same as x >=
y
T__
F__
21. The following statement
wants to determine if count is outside the
range
of 0 through 100:
if (count < 0 && count >
100)
T__ F__
22. It is correct to write x%y
if either x or y is float.
T__
F__
23. One limitation of the for
loop is that only one variable may be
initialized in the initialization
expression.
T__
F__
24. How many times is a "do
while" loop executed ?
A.
once B. always skipped C. forever
D. at least once E. none of the above
25. What is the value of w after
this code fragment is executed ?
int x(2), y(5), w;
w = x
* (x > y ? 1 : 2);
A.
2 B. 4 C. 10
D. none of the above
26. In C++ you must declare all
variables only at the beginning
of the function.
T__
F__
27. In C++ cin and cout are
built into C++ language as keywords.
T__
F__
28. The following lines of code
int i = 10;
cout
<< setw(6) << i << i << endl;
display:
1010
T__
F__
29. The following lines of code
double d = 7.0;
cout << d << endl;
display: 7.0
T__
F__
30. The following function
prototypes
int increment(char);
int increment(int);
are not accepted in C++ because they have
the same name.
T__
F__
31. Parameter names in a
prototype are optional.
T__
F__
32. The following is a
function prototype:
CalcTotal();
T__ F__
33. If a C++ program has two
component functions, main() and
mistery(), it is possible that mistery() calls
main().
T__
F__
34. The parameter must have the
same name with the argument.
T__
F__
35. Parameters are declared and
initialized on the function header.
T__
F__
36. The following declaration is
accepted by the compiler:
int return;
T__
F__
37. The following declaration is
not accepted by the compiler:
int weight = 4,000;
T__
F__
38. Changes to a function
parameter always affect the original
argument as well.
T___
F__
39. The following function
prototypes are accepted by compiler:
int GetValue();
double GetValue();
T___
F__
40. The following implementation
is correct:
double average (int value1, int value2, int
value3)
{
double average;
average = value1 + value2 + value3 / 3;
}
T___
F__
41. This program will not
compile:
int main()
{
float This_One = 2;
float That_One;
That_one
= 2 * This_one;
}
T__
F__
42. This program will not
compile:
main()
{
double constant_1 = 2; /* Program constant
double
variable_1; /* Program variable.
variable_1
= constant_1 + constant_1;
}
T__
F__
43. There is no logical error
inside this code segment:
if ( gender == 1 )
cout
<< "Woman" << endl;
else;
cout
<< "Man" << endl;
T__
F__
44. There is no logical error
inside this code segment:
while ( z >= 0 )
sum
+= z;
T__
F__
45. There is an error inside
this code segment:
int x
= 1, total;
while ( x <= 10 )
{
total += x;
++x;
}
T__
F__
46. The following program is
syntactically correct
#include iostream
using
namespace std;
int
main ()
{
int a, b, c
a =
3; b = 4; c = a + b;
cout << "The value of c is "
<< c;
return
0;
}
T__ F__
47. The following program is
syntactically incorrect:
#include <iostream>
using
namespace std;
int
main ()
{
int a,
b, c
a = 3; b = 4;
c = a + b;
cout << "The value of c is "
< c;
return
0;
}
T__ F__
48. The following program is
syntactically correct:
for ( int x = 1; x <= 20; ++x )
{
if (
x % 5 == 0 )
cout << x << endl;
else
cout << x << '\t';
}
T__ F__
49. The following program is
logically correct:
switch ( n )
{
case 1:
cout << "The number is 1"
<< endl;
case 2:
cout
<< "The number is 2" << endl;
break;
default:
cout
<< "The number is not 1 or 2" << endl;
break;
}
T__ F__
50. The following code prints
the values 1 to 10.
n = 1;
while ( n < 10 )
cout << n++ << endl;
T___ F__
51. The following code is correct:
for ( x = 100, x >= 1, ++x )
cout << x << endl;
T___ F__
52. The following program is
syntactically correct:
int sum( int x, int y )
{
int
result;
result
= x + y;
}
T___ F__
53. The following program is
syntactically correct:
void
product()
{
int a; int b; int
c; int result;
cout << "Enter three integers:
";
cin >> a >> b >> c;
result = a * b * c;
cout << "Result is " <<
result;
return result;
}
T___
F__
54. The following program has no
error:
using namespace std;
int main ()
{
double number1, number2, sum;
cout << "Enter a number:
";
cin >> number1;
cout << "Enter another
number: ";
cin >> number2;
sum = number1 + number2;
cout << "The sum of the two
numbers is " << sum;
return 0;
}
T___
F__
55. The following program has no
error:
#include <iostream>
using namespace std;
int main ()
{
double number1, number2, sum;
cout << "Enter a number:
";
cin << number1;
cout << "Enter another
number: ";
cin >> number2;
sum = number1 + number2;
cout << "The sum of the two
numbers is " << sum;
return 0;
}
T___
F__
56. The following program is
syntactically correct:
#include <iostream>
using namespace std;
int main ()
{
double number1, number2, sum;
cout << "Enter a number:
";
cin >> number1;
cout << "Enter another
number: ";
cin >> number2;
number1 + number2 = sum;
cout << "The sum of the two
numbers is " << sum;
return 0;
}
T___
F__
57. The following program is
syntactically correct:
#include <iostream>
using namespace std;
int main ()
{
double number1, number2, sum;
cout << "Enter a number:
";
cin >> number1;
cout << "Enter another
number: ";
cin >> number2;
sum = number1 + number2;
cout "The sum of the two numbers
is " << sum;
}
T___
F__
58. The following program is
syntactically correct:
#include <iostream>
using namespace std;
void main ()
{
const number1, number2, product;
cout << "Enter two numbers
and I will multiply\n";
cout << "them for
you.\n";
cin >> number1 >> number2;
product = number1 * number2;
cout << product;
}
T___
F__
59. There is something compiler
does not like in this code:
#include <iostream>;
using namespace std;
void main ()
{
int number1, number2, product;
cout << "Enter two numbers
and I will multiply\n";
cout << "them for
you.\n";
cin >> number1 >> number2;
product = number1 * number2;
cout << product;
}
T__
F__
60. The following program is
syntactically correct:
#include <iostream>
using namespace std;
void main ()
{
int number1, number2, product;
cout << "Enter two numbers
and I will multiply\n";
cout << "them for
you.\n";
cin >> number1 >> number2;
product = number1 * number2;
cout << product;
return 0;
}
T__
F__
61. The following program is
syntactically correct:
#include <iostream>
using namespace std;
int main ()
{
int number1, product;
cout << "Enter two numbers and I
will multiply\n";
cout << "them for
you.\n";
cin >> number1 >> number2;
product = number1 * number2;
cout << product;
return 0;
}
T__
F__
62. The following program is correct:
#include <iostream>
using namespace std;
int main()
{
int numCount, total;
double average;
cout << "How many numbers
do you want to average ? ";
cin >> numCount;
for (int count = 0; count <
numCount; count++)
{
int num;
cout << "Enter a
number: ";
cin >> num;
total += num;
count++;
}
average = total / numCount;
cout << "The average is
<< average << endl;
return 0;
}
T__ F__
63. The following program is logically
correct:
#include <iostream>
using namespace std;
int main()
{
int count=1, total=0;
while (count <= 100)
total += count;
cout << "The sum of the
numbers 1-100 is ";
cout << total << endl;
return 0;
}
T__ F__
64. What value does this
program display?
void inc( int x );
void main()
{
int x = 1;
inc( x );
cout << x;
}
void inc( int x )
{
x++;
}
A. -1 B. 0
C. 1 D. 2
65. Class-objects contain only
data.
T__
F__
66. The purpose of information
hiding is to keep the data
members public.
T__
F__
67. Class members may be all
private.
T__
F__
68. private keyword must be always
used to declare private members.
T__
F__
69. A member function is called
to act on a specific object.
T__
F__
70. If three objects of a class
are defined, how many copies
of that class data are stored in memory ?
And how many copies of its member functions
?
A. 3
3 B. 1 1 C.
1 3
D. 3 1
71. Data or functions designated
private are accessible
A. to any function in the program.
B. to
private member-functions of that class only
C. only if you know the password
D. to all member-functions of that class
72. A constructor has a header syntactically implemented like
for
any other function in
C++.
T__
F__
73. There is always at
least one constructor part of the class.
T__
F__
74. Like any C++
function, a constructor may be overloaded.
T__
F__
75. A constructor can
call other member functions of the class.
T__
F__
76. Attempting to
initialize a non-static data member of a class
explicitly in the class definition is a syntax
error.
T__
F__
77. Class members
specified as private are accessible only to
member functions of the class and friends of
the class.
T__
F__
78. You cannot use the
scope-resolution-operator :: in main().
T__
F__
79. Defining as const a
member function that modifies a data member
of an
object is a compilation error.
T__
F__
80. The prototypes for
friend functions must appear in the class
definition.
T__
F__
81. You can declare as
const all of a class's member functions.
T__
F__
82. You can declare an
object as const.
T__
F__
83. The following class implementation
is syntactically correct:
class Time
{
public:
// function
prototypes
private:
int hour = 0;
int minute = 0;
int second = 0;
};
T__
F__
84. The following class
definition is syntactically correct:
class Circle:
{
private
double centerX;
double centerY;
double radius;
public
SetCenter(double,double);
SetRadius(double);
}
T__
F__
85. Objects may be passed
as function arguments.
T__ F__
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