c++ - 遍历 Vector 中结构的成员时出错

Question

我的 .h 文件中有一个结构体和两个 vector :

struct FTerm {
    int m_delay;
    double m_weight;
};

std::vector<FTerm> m_xterms;
std::vector<FTerm> m_yterms;

我已经读入了一个文件来填充 m_xterms 和 m_yterms 的值，我正在尝试遍历这些值:

vector<FTerm>::iterator terms;

        for (terms = m_xterms.begin(); terms < m_xterms.end(); terms++)
        {
            int delaylength = m_xterms->m_delay * 2; // Assume stereo
            double weight = m_xterms->m_weight;
        }

虽然我很确定我的逻辑有误，但我目前收到错误 Error expression must have a pointer type。卡在这一段时间了，谢谢。

Answer 1

改变

int delaylength = m_xterms->m_delay * 2;
double weight = m_xterms->m_weight;

到

int delaylength = terms->m_delay * 2;
               // ^^^^^
double weight = terms->m_weight;
             // ^^^^^

因为你想通过

访问值

vector<FTerm>::iterator terms;

在循环中

for (terms = m_xterms.begin(); terms < m_xterms.end(); terms++)
  // ^^^^^

---

"Although I'm pretty sure I have the logic wrong, ..."

除非您提供有关逻辑要求的更多上下文，否则无法回答。