c++ - C2059 : syntax error: constant

Question

我无法解决第 19-23 行的 C:2059 错误。我确定我创建的 vector 数据类型是正确的。我哪里出错了？

调试器输出:C:\Qt\Tools\QtCreator\bin\Neutropenia_Application\classifier.h:21: error: C2059: syntax error : '常量'

#ifndef CLASSIFIER_H
#define CLASSIFIER_H

#include "patient_data.h"
#include <QObject>
#include <vector>
#include <stdlib.h>

class Classifier : public QObject
{
    Q_OBJECT
public:
    explicit Classifier(QObject *parent = 0);
    ~Classifier();
    void classify(std::vector<patient_data>data, patient_data i);

    struct CreateSDTable
    {
        std::vector<long> sum(3);    // C2509 error    //element 0 = Tumor, element 1 = Stage, element 2 = Adjuvant
        std::vector<long> mean(3);     // C2509 error
        std::vector<long> error(3);  // C2509 error
        std::vector<long> SDL(3);   // C2509 error
        std::vector<long> SD(3);  // C2509 error
    };

    CreateSDTable CurrentvsNeutropenic;
    CreateSDTable CurrentvsNonNeutropenic;

private:
/*
    std::vector<int> calculatesums(std::vector<patient_data> data, patient_data i);
    std::vector<long> calculatemean(std::vector<int>validpatients, CreateSDTable Neut, CreateSDTable NonNeut);
    std::vector<long>calculateerror(patient_data d, std::vector<int>m);
    std::vector<long>calculatSDL(int nvp, CreateSDTable CVN, CreateSDTable CVsNN);
    std::vector<int> NumofValidPatients(std::vector<patient_data>x);

    //void classify(std::vector<patient_data>data, patient_data i);
*/
signals:

public slots:

};

#endif // CLASSIFIER_H

Answer 1

您不能以这种方式初始化成员变量。您需要将声明和初始化分开:

struct CreateSDTable {
    std::vector<int> sum;
    ...
    CreateSDTable() : sum(3), ... {}
};