COleCurrency 关系操作符

BOOL operator ==( const COleCurrency& cur ) const;
BOOL operator !=( const COleCurrency& cur ) const;
BOOL operator <( const COleCurrency& cur ) const;
BOOL operator >( const COleCurrency& cur ) const;
BOOL operator <=( const COleCurrency& cur ) const;
BOOL operator >=( const COleCurrency& cur ) const;

说明：
这些操作符比较两个货币值，如果条件为真，则返回非零值，否则为0。
注意：
如果有一个操作数的状态为空或无效，排序操作符(<, <=, >, >=)的返回值未定义。等值操作符(==, !=)是操作数的状态而定。

示例：
COleCurrency curOne(3, 5000); // 3.5
COleCurrency curTwo(curOne); // 3.5
BOOL b;
b = curOne == curTwo; // TRUE

curTwo.SetStatus(COleCurrency::invalid);
b = curOne == curTwo; // FALSE, different status
b = curOne != curTwo; // TRUE, different status
b = curOne < curTwo; // FALSE, same value
b = curOne > curTwo; // FALSE, same value
b = curOne <= curTwo; // TRUE, same value
b = curOne >= curTwo; // TRUE, same value
注意：最后四行在调试模式中将会发出声明警告。

请参阅：COleCurrency::GetStatus