strange: k=(++i)+(++i)+(++i)???

[tony_se]

int i = 3;
int k=(++i)+(++i)+(++i);

after execution:
java: i=6, k=15
gcc: i=6, k=16
vc: i=6, k=18

why? it is strange!!

 

[John Carson]

int i = 3;
int k=(++i)+(++i)+(++i);

after execution:
java: i=6, k=15
gcc: i=6, k=16
vc: i=6, k=18

why? it is strange!!

This is about the 10,000th time this has been asked. The behaviour in C++ is
undefined. Anything can happen.

http://www.parashift.com/c++-faq-lite/misc-technical-issues.html#faq-39.15

 

[Mike Wahler]

int i = 3;
int k=(++i)+(++i)+(++i);

after execution:
java: i=6, k=15
gcc: i=6, k=16
vc: i=6, k=18

why? it is strange!!

Undefined behavior is often strange.
Did you check the FAQ?

-Mike

 

[James Kanze]

Undefined behavior is often strange.

Note that it's not undefined behavior in Java, and all
conformant Java implementations will give the same result.

 

[tony_se]

Thank you all!
Can you tell me where to find FAQ?

 

[Larry Smith]

Thank you all!
Can you tell me where to find FAQ?

John Carson gave it to you in his reply,
but here it is again:

http://www.parashift.com/c++-faq-lite/misc-technical-issues.html#faq-39.15