c - C中的后增量概念

Question

输出和为什么？根据我的知识，在执行语句后进行增量评估。这里在左侧，逻辑“i”值是 1 还是 2？

#include <stdio.h>
int main()
{
    int i = 1;
    if (i++ && (i == 1))
        printf("Yes\n");
    else
        printf("No\n");
}

Answer 1

Here On the left side if logical 'i' value will be 1 or 2?

它将是 2 因为有一个 sequence point在逻辑 && 的左右操作数的求值之间。

c-faq定义序列点为

A sequence point is a point in time at which the dust has settled and all side effects which have been seen so far are guaranteed to be complete.

这意味着在计算&&的右操作数之前，i的副作用已经保证完成。