Why this code generate f

Question

int main ()
{
int a=15;
cout <<hex <<a;
}

..Output is..
f

Why this code generate f and why not other?

Answer 1

It's the value of a in hexadecimal

Answer 2

std::hex modifies the default base for numeric I/O. So the value 15 is printed in hexadecimal, which is "f".

Answer 3

Nom Butt The question has already been answered. f is 15 in hexadecimal notation

https://en.m.wikipedia.org/wiki/Hexadecimal

Answer 4

Anna ?