The set function in C++ bitset is employed to assign a value of 1 to all the bits. When a single parameter is provided, it updates the bit at the specified index to 1.
Syntax
Example
set(int index, bool Val);
set();
Parameter
The index parameter indicates the specific location where the bit needs to be set. This parameter is not required and can be omitted if not needed.
The 'val' parameter indicates a boolean value that needs to be assigned to the specified index. It is an optional parameter.
Return value
It does not return any value.
Example 1
Example
#include <iostream>
#include <bitset>
using namespace std;
int main()
{
bitset<4> b(string("1001"));
cout<< "before applying set method : " << b <<'\n';
cout<< "after applying reset method : " <<b.set() <<'\n';
return 0;
}
Output:
Output
before applying set method : 1001
after applying reset method : 1111
Example 2
Example
#include <iostream>
#include <bitset>
using namespace std;
int main()
{
// Initialization of bitset
bitset<4> b1(string("1100"));
bitset<6> b2(string("100100"));
// Function that resets all bits
cout<< "Before applying set() function: "<< b1 <<endl;
// single parameter is passed
b1.set(1);
cout<< "After applying set(1) function: "
<< b1 <<endl;
// Function that resets all bits
cout<< "Before applying set() function: "
<< b2 <<endl;
// both parameters is passed
b2.set(2, 0);
b2.set(4, 1);
cout<< "After applying set(2, 0) and"
<<" set(4, 1) function: " << b2 <<endl;
return 0;
}
Output:
Output
Before applying set() function: 1100
After applying set(1) function: 1110
Before applying set() function: 100100
After applying set(2, 0) and set(4, 1) function: 110000
