C++
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x
22
1
2
using std::cout;3
using std::endl;4
int main(void) {5
int arr[] = {0,1,2,3,4,5,6,7,8,9,10};6
int opsize = sizeof(arr) / sizeof(*arr);7
int n = opsize;8
9
for (int counter = 1; counter < opsize; counter++)10
{11
for (int j = 0; j < n; j++)12
{13
/* Check if jth bit in the counter is set14
If set then print jth element from arr[] */15
if (counter & (1<<j))16
cout << arr[j] << " ";17
}18
cout << endl;19
}20
}21
22
$ g++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.73.0/gcc-10.1.0/include -std=gnu++2a
Start
0 1 0 1 2 0 2 1 2 0 1 2 3 0 3 1 3
0
Finish