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Bitset all() function in C++ STL
The bitset all() function an inbuilt function of the C++ STL( Standard Template Library). This function returns a Boolean value. The returned value is true if all the bits of the calling bitset are 1 else it will return false.
The function does not accept any parameter and returns a Boolean value.
Syntax
Bool bitset_name .all()
Sample
Bitset = 100101
Output
false
Because all bits of the set need to be true in order to return a true value.
Example
#include <bits/stdc++.h>
using namespace std;
void printer(bool val){
if(val){
cout<< "The bitset has all bits set"<< endl;
} else{
cout << "The bitset does not have all bits set"<< endl;
}
}
int main() {
bitset<4> bit1(string("1011"));
bitset<6> bit2(string("111111"));
cout<<"The bitset is "<<bit1<<endl;
printer(bit1.all());
cout<<"The bitset is "<<bit2<<endl;
printer(bit2.all());
return 0;
}Output
The bitset is 1011 The bitset does not have all bits set The bitset is 111111 The bitset has all bits set
Updated on: 09-Aug-2019
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