C++ Basic Online Test - 2

1. What is the size of a boolean variable in C++?

1 byte

4 bytes

1 bit

2 bytes

2. What will be the output of the following program in both C and C++?

#include<stdio.h>
int main(int argc, char const *argv[])
{
	printf("%d\n", (int)sizeof('a'));
	return 0;
}

Output in C is 4 and in C++ is 4

Output in C is 1 and in C++ is 1

Output in C is 1 and in C++ is 4

Output in C is 4 and in C++ is 1

3. Which of the following is an entry-controlled loop?

while

do-while

both while and for

for

4. What is static binding?

The process of linking the actual code with a procedural call during run-time

The process of linking the actual code with a procedural call at any-time

The process of linking the actual code with a procedural call during compile-time

All of the mentioned

5. What will be the output of the following C++ code?

#include<stdio.h>
int main(int argc, char const *argv[])
{
	char a = 'a';
	printf("%d\n", (int)sizeof(a));
	return 0;
}

Output in C is 1 and in C++ is 1

Output in C is 1 and in C++ is 4

Output in C is 4 and in C++ is 4

Output in C is 4 and in C++ is 1

6. What is name mangling in C++?

The process of declaring variables of different types

The process of adding more information to a function name so that it can be distinguished from other functions by the compiler

The process of changing the names of variable

The process of making common names for all the function of C++ program for better use

7. Which of the following is not a fundamental type is not present in C but present in C++?

float

void

bool

int

8. Which of the following is an exit-controlled loop?

for

all of the mentioned

do-while

while

9. In which part of the for loop termination condition is checked?
for(I;II;III)
{IV}

III

10. Which of the following is C++ equivalent for scanf()?

input

cin

cout

11. What if we define the below structure in C and C++?

Error in both C and C++

Error in C but not in C++

No error in both C and C++

Error in C++ but not in C

12. Which of the following is the correct difference between cin and scanf()?

scanf() is a stream object whereas cin is a function

cin is a stream object whereas scanf() is a function

cin is used for printing whereas scanf() is used for reading input

both are the same

13. Which of the following is C++ equivalent for printf()?

cout

cin

input

14. What is dynamic binding?

The process of linking the actual code with a procedural call during run-time

The process of linking the actual code with a procedural call at any-time

All of the mentioned

The process of linking the actual code with a procedural call during compile-time

15. Which of the following syntax for declaring a variable of struct STRUCT can be used in both C and C++?

struct STRUCT S;

STRUCT S;

Both C and C++ have different syntax

Both struct STRUCT S; and STRUCT S;