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# diff between += and =+ different output

marco marco
Greenhorn
Posts: 5
public class desk {
public static void main(String args[]) {
int b = 1;
int a =0;
for(int i=0; i< 10; i++){
a =+ b;
// a += b;
}
}
}

Running a =+ b; and then a += b; gives you two different answers.

I know that a =+ b Equivalent to a = a + b

what is a +=b equivalent to ?

Why is that ?

Keith Lynn
Ranch Hand
Posts: 2409
I believe that what's happening here is the following

a =+ b is not an increment operator.

I believe it is like saying a = (+b).

So we aren't incrementing a.

ak pillai
author
Ranch Hand
Posts: 288
It is a good practice to start your names with uppercase i.e. "Desk" not "desk".

a += b means a = a+b

but a =+ b means a = b;
and a =- b means a = -b;

marco marco
Greenhorn
Posts: 5
Great. Thank you for your heplp

Andrew Monkhouse
author and jackaroo
Marshal Commander
Posts: 12014
220
Bit late, but moving this to JiG (Beginners).