[algogeeks] Output

[rajesh pandey]

void dosomething(int num)
{
int mask=~(1<<5-1);
int res=num&mask;
printf("%d",res);
}
int main()
{
dosomething(56);
dosomething(64);
dosomething(127);
return 0;
}

please explain  the logic behind the output.

Thanks,
Rajesh  

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