C++ Syntax: Equality: == !=
Description
The operator == compares two values and returns 1 (true)
if the are equal or 0 otherwise. The operator !=
checks for inequality in the same way.
See operator
precedence
Other Uses for == !=
None.
Usage Notes
Take care, a popular mistake of a novice (and sometimes not so novice)
is:-
<![CDATA[
if ( a = b ) {
]]>
which is perfectly good C++. The point is the assignment
operator =, like all other operators, returns a value
(its the value of the right hand side). The fact that it also
assigns it to the right hand side makes no
difference. So the above means assign the value of
b to a and execute the conditional statement
if b is not 0 (in C++ any non-zero
value is considered to be true).
Go Back to the
The C++ Crib Top Page
If you have any comments about this page please send them to
Nick West