Why is '&' used

Answer 1

In C/C++ '&' is aslo known as reference operator which is used to get pointer address of a variable

Answer 2

Thanks

Answer 3

& symbol can also mean 'address of' operator in C/C++, it's contextual. You should at least clarify your question because you didn't tag any language - while you took 3 courses (how would anyone know which?), and no code was included to point out clearly where it is used.

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Answer 4

There are two meaning

'&' is Address Extraction Operator. This is a unary oprt in C/C++/Java. It returns the address (memory location in which variable stored) of the variable on which it applied.

Example int n=10
&n gives you the address of location where n is stored

This is also a Binary oprt, that's called Bitwise AND oprtr.

Answer 5

Please clear my doubt

Answer 6

“&” is used for many things, to say “And”, in JS (Javascript) is used for
Logical Operators
“&&” Returns true, if both operands are true.