Question

此程序的目标是取1到365之间的整数并将其转换为月和日。防爆。 2 = 1月2日，365 = 12月31日。我以为我把所有内容都输入正确，我在正确的轨道上，但现在我有16个错误来自我的头文件中的12-14行，并且1个错误来自我的类文件。

我不确定它是否真的是标题，或者我是否在其他地方搞砸了。

HEADER FILE

#ifndef DAYOFYEAR_H
#define DAYOFYEAR_H

class DayOfYear
{
private:
    int day;

public:
    DayOfYear();
    static int daysAtEndOfMonth[];
    static string monthName[];
    void print();
    void setDay(int day) { this->day = day; };

};

#endif

类

#include "DayOfYear.h"
#include <iostream>
#include <string>

using namespace std;

DayOfYear::DayOfYear() {

}

int DayOfYear::daysAtEndOfMonth[] = {
31, 59, 90,
120, 151, 181,
212, 243, 273,
304, 334, 365
};

string DayOfYear::monthName[] = { "January", "February",
"March", "April",
"May", "June"
"July", "August",
"September", "October",
"November", "December"
};

void DayOfYear::print() {
    int month = 0;

    while (daysAtEndOfMonth[month] < day)
        month = (month + 1) % 12;


    if (month == 0) {
        cout << "\nJanuary" << day << endl << endl;
    }

    else
    {
        cout << endl << monthName[month] << " " << day - daysAtEndOfMonth[month - 1]
            << "\n\n";
    };
};

主要

#include <iostream>
#include <string>
#include "DayOfYear.h"

using namespace std; 

int main() {
    int day; 
    DayOfYear DayOfYearObj;

    cout << "This program will convert an integer between 1 and 365 to a Month/Day format"
        << endl << endl;
    cout << "Please enter an integer from 1 to 365:";
    cin >> day;

    //set day
    DayOfYearObj.setDay(day);

    //display
    DayOfYearObj.print();

    return 0;

}

Answer 1

您的头文件需要excelApp.DisplayAlerts = false; workBook = (Microsoft.Office.Interop.Excel._Workbook)(excelApp.Workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet)); //DataTable to Excel foreach(DataTable table in dataSet.Tables) { workSheet = (Microsoft.Office.Interop.Excel.Worksheet)excelApp.Worksheets.Add(Missing.Value, Missing.Value, Missing.Value, Missing.Value); workSheet.Name = table.TableName; for (int i = 0; i < table.Columns.Count; i++) { workSheet.Cells[1, (i + 1)] = table.Columns[i].ColumnName; } for (int i = 0; i < table.Rows.Count; i++) { for (int k = 0; k < table.Columns.Count; k++) { workSheet.Cells[(i + 2), (k + 1)] = table.Rows[i][k]; } } workBook.Worksheets.Add(workSheet); } //Trying to delete empty sheets foreach (Microsoft.Office.Interop.Excel.Worksheet sheet in workBook.Sheets) { excelApp.DisplayAlerts = false; if (sheet.Cells.MaxRow == -1 && sheet.Cells.MaxColumn == -1) { sheet.Delete(); } }，您必须在头文件中引用#include <string>。

（在{+ 1}}中，在C ++文件中使用std::string已经足够糟糕了，它在头文件中更糟糕了 - 它将整个std命名空间带入< em>包含标题的每个文件。只需说不！）

其他评论：

using namespace std;和daysAtEndOfMonth应为monthName。
下次包含错误消息（此错误很明显，下一个错误不会出现）。
下次，将评论标记与错误对齐 - 我不会花时间倒计时到第45行。

如何解决我的C ++头文件中的很多错误？

1 个答案: