Relational
Operators
| Operator |
Description |
| =
= |
equal
to |
| !
= |
not
equal to |
| > |
greater
than |
| >
= |
greater
than or equal to |
| < |
less
than |
| <
= |
less
than or equal to |
There are six
relational operators used for data comparisons in C++. These operators
must always appear between 2 literals, 2 variables, 2 arithmetic
expressions, or a combination of these possibilities. The operators
may be used with numbers, characters, or apstrings.
Check out this
example:
|
Assume these values are
assigned:
int a = 4;
int b = 12;
int c = 16;
int d = 4; |
... then the following are true:
a = = d
b < c
c > a
c != d
a >= 0
|
 |
Notice that ONE
equal sign is used to "assign" a value, but TWO equal
signs are used to check to see if values are equal to one another. |
Relational operators
always yield a TRUE or FALSE result.
Remember that a TRUE result evaluates to
any non-zero
value (often 1),
while a FALSE result evaluates
only to zero.
Relational operators have a lower
precedence than the arithmetic operators.
This means that an
expression such as x + 4 > = y - 5
is the same as (x + 4) > = (y - 5).
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