Is Short Circuit Evaluation guaranteed In C++ as it is in Java?

In Java, I use

if (a != null && a.fun开发者_运维百科());

by taking full advantage of short-circuit evaluation and expression are evaluated from left to right?

In C++, can I do the same? Are they guarantee to portable across different platform and compiler?

if (a != 0 && a->fun());

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Yes, it is guaranteed for the "built in" types. However, if you overload && or || for your own types, short-circuited evaluation is NOT performed. For this reason, overloading these operators is considered to be a bad thing.

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Yes. && and || short circuit in C and C++; it is guaranteed by the standard.

See also: Is short-circuiting logical operators mandated? And evaluation order?