Meaning of a&1?

#1

In this video of ternary operator he is saying a%2 can also be written as a&1 how ??

#2

Hello @Ramitgoel,

These two operators ‘%’ and ‘&’ are interchangeable due their common application i.e.,
To check if a number is odd or even.

Suppose, a is variable of type int.
int a;

  1. ‘%’ operator: it is used to obtain the remainder in the division operation:
    Now, if we would divide any number with 2 then its remainder would either be 0 or 1.
    1.1. For even number: remainder would be 0
    example: 4%2=0
    1.2. For odd number: remainder would be 1
    example: 5%2=1

  2. ‘&’ operator: It is a bit-wise AND operator:
    Now, if you would AND the number(binary representation) with 1(binary representation) the output would either be 0 or 1.
    2.1. For even number: remainder would be 0
    example: 4&1=0
    0100 (4)
    0001 (1)
    0000 (Result of bit-wise AND)
    2.2. For odd number: remainder would be 1
    example: 5&1=1
    0101 (5)
    0001 (1)
    0001 (Result of bit-wise AND)

Hope, this would help.
Give a like, if you are satisfied.

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#3

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