I’m reading a C ++ code, the code has a line like this:

for(;;) 
{
    if(~theArray[i] & anotherCondition)
    {
        DoSomeThing();
    }
}

For some values i code goes back to the beginning of the loop, what exactly does this expression ~
on array, do?

Can anybody help?

>Solution :

~ operator indicates bitwise complement.

Bitwise complement operator is an unary operator (works on only one operand). It changes 1 to 0 and 0 to 1.

For example:

35 = 00100011 (In Binary)

complement of 35 is

~ 00100011 = 11011100 which is equal to 220 (In decimal)

Please check below resources to learn more about it

Bitwise Operators

Bitwise Complement Operator