Question

我很沮丧。我试图找到一种方法来获取名为'line'的变量，以便在代码底部的for循环内访问。

#include <ctime>
#include <iostream>
#include <sys/types.h>
#include <dirent.h>
#include <errno.h>
#include <vector>
#include <string>
#include <iostream>
#include <Lmcons.h>
#include <fstream>
#include <windows.h>

using namespace std;

string currentmonth;
string earlydays;

//**************************************
string a3;
string a1;

int getdir (string dir, vector<string> &files)
{
    DIR *dp;

    struct dirent *dirp;

    if((dp = opendir(dir.c_str())) == NULL)
    {
        cout << "Error(" << errno << ") opening " << dir << endl;
        return errno;
    }

    while ((dirp = readdir(dp)) != NULL) {
        std::string fname = dirp->d_name;
        if(fname.find("FIN804") != std::string::npos)
            files.push_back(fname);
    }
}

//***************************************
int main() {
    //Copy New date to be used from date database

    ifstream dailyfiledate;

    dailyfiledate.open("Databasedate.txt");

    string line;

    if (!dailyfiledate) //checks to see if file opens properly
    {
        cerr << "Error: Failed to copy the first string from Date Database.";
    }
    else
    {
        if (getline(dailyfiledate, line)) // Get line
            cout << line; // print the line.

        dailyfiledate.close(); // Remember to close the file.
    }

    string dir = string(a1);

    vector<string> files = vector<string>();

    getdir(dir,files);

    for (unsigned int i = 0; i < files.size();)
    {
        //cout << files[i] << endl;
        a3 = files[i];
        cout << a3 << endl;
        string b1 = a3 + line;
        cout << b1 << endl;
        remove(b1.c_str());
        i++;
    }
}

Answer 1

实际上，变量在for循环中成功到达。我想这是对我的道路的疏忽。

上面的代码在编译时绝对没有错误。

你真的需要更加谦虚。给出答案，给予指导，或者根本不发表评论。

循环内部变量

1 个答案: