C++ bitset operator[] Function

C++ bitset function is used to access value to any index of a bitset.

Syntax

boolean operator [] (int pos);
reference operator[] (int pos);

Parameter

pos: The parameter index specifies the position at which the value is to be assigned.

Return value

The function returns the value to the bit at the index.

Example 1

#include <iostream>
#include <bitset>
using namespace std;
int main()
{
bitset<4> b;
b[1]=1;
b[2]=b[1];
cout<< "b :" << b;
return 0;
}

Output:

b :0110

Example 2

#include <iostream>
#include <bitset>
using namespace std;

int main()
{
bitset<4> b(string("1001"));
b[1]=1;
b[2]=b[1];
cout<< "b :" << b;
return 0;
}

Output:

b :1111

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C++ Bitset Function