=="&的返回QUOT值;操作者用C [英] Return value of "==" operator in C
问题描述
我可以假设,在C中,==运营商将始终为1,如果两个值相等,也可以计算为其他的真值?
结构SS {
INT ID;
};的OS {
INT SID;
INT状态;
};诠释计数(结构SS * S,诠释状态)
{
INT NUM = 0;
在哈希表//的foreach O(类型OS *)
NUM + =邻>国家==状态和放大器;&安培; (?的邻> SID == S-和SEQ ID:1); 返回NUM;
}
所以邻> SID == S-> ID
总是会返回1或0,或者它可以返回其他值
我可以假设,在C中,==运营商将始终为1,如果两个值相等,也可以计算为其他的真值?
块引用>是的,也是如此
=
&GT; <!/ code>
&LT;
&GT; =
&LT; =
所有的关系运算符C11(ISO / IEC 9899:201X)§6.5.8的关系运算符的
每个运营商和LT的; (小于),>(大于),LT =(小于或等于),和> =
(大于或等于)应得到1-如果指定的关系为真和0,如果它是
false.107)结果的类型为int。
块引用>Can I assume that in C, the "==" operator will always evaluate to 1 if the two values are equal or it can evaluate to other "true" values?
struct ss { int id; }; struct os { int sid; int state; }; int count(struct ss *s, int state) { int num = 0; // foreach o (of type os*) in a hash table num += o->state == state && (s ? o->sid == s->id : 1); return num; }
So
o->sid == s->id
will return always 1 or 0, or it can return other values?解决方案Can I assume that in C, the "==" operator will always evaluate to 1 if the two values are equal or it can evaluate to other "true" values?
Yes, and so does
!=
>
<
>=
<=
all the relational operator.C11(ISO/IEC 9899:201x) §6.5.8 Relational operators
Each of the operators < (less than), > (greater than), <= (less than or equal to), and >= (greater than or equal to) shall yield 1 if the specified relation is true and 0 if it is false.107) The result has type int.
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