Đề thi trắc nghiệm lập trình c

BÀI THI TRẮC NGHIỆM
ĐỀ SỐ: 501

1. What value is stored in x after the following two statements are
executed:
int x;
x = 2 / 4 * 4 / 2;
A
0

B
0.0625

C
1

D
1.0

2. Which of the following statements will correctly output the quote:
Dan Quayle once said, "Who’s responsible for the riots? The rioters."
A
cout << "Dan Quayle once said, "Who\’s responsible for the riots? The
rioters. " ";

B
cout << "Dan Quayle once said, Who’s responsible for the riots? The
rioters.";

C
cout << "Dan Quayle once said, "Who’s responsible for the riots? The

rioters. " ";

D


cout << "Dan Quayle once said, \"Who’s responsible for the riots? The
rioters. \" ";

3. Which of the following will output "Yes" if the integer variable num is
either 2, 3, 4, or 5?
A

B

C

D

4. Which snippet of code correctly adds the odd integers between 1 and 20?
A


B

C

D

5.

A

B

C

D

6. Which of the following is an invalid comment?
A
// Comment regarding the program

B


/* Comment regarding the program */

C
/**************************

D
/************************** * Comment about the program
**************************/

7. What data types can be used to store numeric values with a decimal
point, such as 3.14 ?
A
short, int

B
long

C
float, double

D
char

8.


A
x = 1, y = 2

B
x = 1, y = 1

C
x = 0, y = 2

D
x = 0, y = 1

9. What value is stored in variable x?
int x;
x = 2 * 3 + 4 * 5 -4 / 2;
A
24

B
11

C
14

D
28

10. How can we input a value from the keyboard and store it in the
variable named num?
A
cout << num;

B


cin >> num;

C
cin << num;

D
num = input();

11. To access functions such as abs, rand, or exit, what should be added to
the top of the program?
A
#include < cmath>
using namespace std;

B
#include < stdlib.h>

C
#include < cstdlib>
using namespace std;

D
#include < iostream>
using namespace std;

12. Which of the following functions correctly returns the minimum of
three integers passed in?
A


B

C

D

13.


3223

B
3211

C
3212

D
3213

14.


X =1 Y = 1

B
X =1 Y = 2

C
X =2 Y = 1

D
X =2 Y = 2

15. Which of the following function prototypes is equivalent to the
following prototype?
int min(int num1, int num2, int num3);
A
int min(long num1, long num2, long num3);

B

int min(int, int, int);

C
int min(double num1, double num2, double num3);

D
long min(int, int, int);

16.

A
Before foo, X=1 In foo, X=1, After foo, X=1

B
Before foo, X=1 In foo, X=2, After foo, X=2

C


Before foo, X=2 In foo, X=2, After foo, X=2

D
Before foo, X=1 In foo, X=2, After foo, X=1

17.

A
10 4 10 4

B

10 4 10 3

C


2 3 10 4

D
10 4 2 3

18.

A
10 4 10 4

B
2 3 10 4

C
10 4 10 3

D


10 4 2 3

19.

A
X=3 Y=2

B
X=3 Y=3

C
X=2 Y=3

D
X=2 Y=2


20. Given the following function prototype:
void foo(int arr[]);
Which statement correctly passes the array to the function?

int arr[10]; foo(arr);

B
int arr[10]; foo(arr[]);

C
int arr[10]; foo(arr[0]);

D
int arr[10]; foo(arr[10]);

21. Which of the following correctly declares an array that holds exactly
10 integers?

int[10] arr;

B
int[11] arr;

C
int arr[11];

D
int arr[10];

22.


321

121

311

An error message

23. Which of the following is an invalid function prototype to accept a twodimensional array of type double?
A
double foo(double arr[10][10]);

B
double foo(double arr[][10]);


C

double foo(double arr[10][100]);

D
double foo(double arr[][]);

24.
A
12345

B
54321

C
52341

D
52345

25.


311

B
321

C
123

D

121

26.


A
int main(){
Foo f;
f->printMessage();
return 0;
}

B
int main(){
Foo f;
f::printMessage();
return 0;
}

C int main() {
Foo f;
f.printMessage();
return 0;


}

D
int main(){
Foo f;

printMessage();
return 0;
}

27. What is the error in the following definition?
class BankAccount{
public:
int ID;
double amount;
}
A
There are no methods

B
There are no private variables

C
There is a missing semicolon after the right curly brace.

D
There are no public accessor methods.

28. Given the following declaration, how do we access the x and y
members of the structure?
struct Point {
int x;
int y;
};
A

Point p;
p->x = 10;
p->y = 20;

B
Point p;
p::x = 10;
p::y = 20;

C
Point p;
p.x = 10;
p.y = 20;

D
Point p;
p:x = 10;
p:y = 20;

29. What is the error in the following definition?
struct BankAccount{
int ID;
double amount;
}

"ID" cannot be all uppercase

B
The keyword "struct" should be "structure"

C
Different data types are not allowed in the struct.

D
There is a semicolon missing after the right curly brace


30. Under the principle of information hiding, which class definition best
encapsulated the variable named "x"?
A

B

C


D

31.


Money m1(10,50), m2(10,50);
A

B

C

D

32.


A
val1=2 val2=1
val1=2 val2=2
val1=2 val2=2

B
val1=0 val2=1
val1=0 val2=2
val1=0 val2=2

C