Forums Register Login

JQ+ question

+Pie Number of slices to send: Send
I am a little confused...on one of the explanations on a JQ+
question it stated that a char value can be assigned to an int variable: i = c; //valid
But cannot assign an int to a char:
c = i;//invalid
However, I saw on another question where a int was assigned to a char value, and it was a valid answer. Can anyone clear this up for me?
+Pie Number of slices to send: Send
It works if the int is final. That causes the int to become a constant and the compiler knows FOR SURE that it will always FIT into the char.
+Pie Number of slices to send: Send
Hi Marc,
The rules applicable for the conversions here in your example are:
1) Conversions from char to int are always valid as they are widening conversions.
2) Conversions from int to char obviously require an cast as they are narrowing conversions.
3) Implicit narrowing conversions occurs from int to char in two cases:
--> When the int literal is in the range of the char (0 to 65535)
--> If the int variable is declared as final and its value is in the range of char (0 to 65535).
So,
int i=100;
final int j=200;
char c='c';
i=c; //valid - widening conversion
//c=i; //compile error - requires cast as it is narrowing conversion
c=100; //valid - implicit conversion of the int literal 100 to char
c=j; //valid - j is a final variable
Hope this helps,
Priya
+Pie Number of slices to send: Send
Thanks guys...cleared things up : )
Would you turn that thing down? I'm controlling a mind here! Look ... look at the tiny ad ...
a bit of art, as a gift, the permaculture playing cards
https://gardener-gift.com


reply
reply
This thread has been viewed 574 times.
Similar Threads
Switch statement
Char
convert char to int in a string?
doubt in method argument declared final
char c = 'b'-'a' --No Compile error??????????
More...

All times above are in ranch (not your local) time.
The current ranch time is
Mar 28, 2024 14:53:29.