Input a number and check whether it is positive or negative??

Question

Pls answer it

Answer 1

Include the header files
int main()
{
float a;
cin>>a;
if(a>0)
{cout<<"The no. u entered is positive";}
else if(a==0)
{cout<<"0 is an unique no.";}
else
{cout<<"The no. u entered is negative";}
}

Answer 2

Pls check the corrections

Answer 3

Why it is float???Sathak

Answer 4

is RETURN O IS NEEDED?

Answer 5

No not needed

Answer 6

😨

Answer 7

it's float cuz if one enters a decimal number float data type is required . int data type will not accept decimal

Answer 8

Every signed datatype uses the most significant bit (msb) as it's sign, and because using < or > is expensive when dealing with non integer values you could use bitwise-AND with the corresponding value.

bool isNegative(double v) {
unsigned long long* _v = (typeof(_v))&v;
bool isNeg = *_v & ((typeof(*_v))1 << (8*sizeof(*_v) - 1));
delete _v;
return isNeg;
}

Answer 9

ya needed it's called success full termination

Answer 10

you can also use if(a>=0) as sometimes 0 is considered to be +ve