When i convert:

int B=1;

boolean A=B;

It gives error: Incompatible types, which is true

But when I write this code:

int C=0;

boolean A=C==1;

it gives false

while if I change value of C to 1 it gives true.

I don't understand how compiler is doing it.

解決方案

int C=0;

boolean A=C==1;

The compiler first gives C a zero.

Variable : C

Value : 0

Now The Assignment statement,

We know that the assignment statement evaluates the right part first and the gives it to the left.

The right part ==> C == 1

Here, This is an expression which evaluates to true or false. In this case it is false as c is 0.

So the R.H.S is false.

Now this gets assigned to the L.H.S which is A.

A = ( C == 1 ) ==> A = false

As A is a boolean this is a right statement

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