Performs a logicalcomparison of two structures to determine whether they are equal.
执行两个结构的逻辑比对，以判断它们是否相等。
2
However, all the logical and comparison operators consistently return the value 1 for true.
然而，所有逻辑和比较运算符都全部返回值1，表示真。
3
The logical operators have lower precedence than the individual comparison operators, which makes sense because the comparison has to be evaluated before the logical operator can be evaluated.