C++ Programming MCQ – Bitset – 2

This set of C++ Programming Multiple Choice Questions & Answers (MCQs) focuses on “Bitset – 2”.

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

#include <iostream>
#include <bitset>
using namespace std;
int main()
{
	bitset<8> b1(20);
	cout<<b1.test(1);
	cout<<b1.test(2);
}

a) 01
b) 00
c) 10
d) 11
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2. Which of the following is correct about any() function in bitset?
a) Returns true if the number of 1’s equal to the number of 0’s
b) Returns true if any bit is set 0
c) Returns true if any bit is set 1
d) Returns true only if all bits are 1
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3. Which of the following is correct about none() function in bitset?
a) Returns true if any bits is set 1
b) Returns true if all bits is set 0
c) Returns true if the number of 1’s equal to the number of 0’s
d) Returns true only if all bits are 1
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4. What will be the output of the following C++ code?

#include <iostream>
#include <bitset>
using namespace std;
int main()
{
	bitset<8> b1(20);
	cout<<b1.none();
	cout<<b1.any();
}

a) 01
b) 00
c) 10
d) 11
View Answer

5. What is the use of the set() function in bitset?
a) Used to make alternate bits zero
b) Used to make a bit 0 in a bitset
c) Used to make all bits zero
d) Used to set bit(s) in a bitset
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6. What happens when no argument is supplied to set() function?
a) All alternate bits are set to 1 in a bitset
b) All bits are set to 0 in a bitset
c) All bits are set to 1 in a bitset
d) First bit is set to 1
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7. What happens when only one argument is supplied to set() function?
a) All bits are set to 1 in a bitset
b) Bit corresponding to an argument is set to 1
c) All alternate bits are set to 1 in a bitset
d) First bit is set to 1
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8. What is the use of reset function in bitset?
a) Used to make alternate bits zero
b) Used to make a bit 0 in a bitset
c) Used to make all bits 1
d) Used to make a bit(s) 0 in a bitset
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9. What happens when no argument is supplied to reset() function?
a) All bits are set to 1 in a bitset
b) All bits are set to 0 in a bitset
c) All alternate bits are set to 0 in a bitset
d) First bit is set to 0
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10. What happens when only one argument is supplied to reset() function?
a) Bit corresponding to an argument is set to 0
b) All bits are set to 0 in a bitset
c) All alternate bits are set to 0 in a bitset
d) First bit is set to 0
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Sanfoundry Global Education & Learning Series – C++ Programming Language.

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