bitset none() in C++ STL
bitset::none() is a built-in STL in C++ which returns True if none of its bits are set. It returns False if a minimum of one bit is set.
Syntax:
bool none()
Parameter: The function accepts no parameter.
Return Value: The function returns a boolean. The boolean value is True if none of its bits are set. It is False if at least one bit is set.
Below programs illustrates the bitset::none() function.
Program 1:
C++
// C++ program to illustrate the // bitset::none() function #include <bits/stdc++.h> using namespace std; int main() { // initialization of bitset bitset<4> b1(string( "1100" )); bitset<6> b2(string( "000000" )); // Function to check if none of // the bits are set or not in b1 bool result1 = b1.none(); if (result1) cout << b1 << " has no bits set" << endl; else cout << b1 << " has a minimum of one bit set" << endl; // Function to check if none of // the bits are set or not in b1 bool result2 = b2.none(); if (result2) cout << b2 << " has no bits set" << endl; else cout << b2 << " has a minimum of one bit set" << endl; return 0; } |
Output:
1100 has a minimum of one bit set 000000 has no bits set
Program 2:
C++
// C++ program to illustrate the // bitset::none() function // when the input is a number #include <bits/stdc++.h> using namespace std; int main() { // initialization of bitset bitset<3> b1(4); bitset<6> b2(0); // Function to check if none of // the bits are set or not in b1 bool result1 = b1.none(); if (result1) cout << b1 << " has no bits set" << endl; else cout << b1 << " has a minimum of one bit set" << endl; // Function to check if none of // the bits are set or not in b1 bool result2 = b2.none(); if (result2) cout << b2 << " has no bits set" << endl; else cout << b2 << " has a minimum of one bit set" << endl; return 0; } |
Output:
100 has a minimum of one bit set 000000 has no bits set
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