vector容器的一个问题

Question

我想读取如下格式的asc文件，想把前六行略过，余下的数字存入数组进行后续计算。我写的代码在下面，大致思路是全部读到vector容器里面，循环12次v1.erase(v1.begin()); 应该就吧前面的哪些元素删了吧？但是运行的时候报错

ncols 543

nrows 220

xllcorner 488469.3190918

yllcorner 3797068.373291

cellsize 2

NODATA_value -9999

-9999 -9999 -9999 -9999 -9999 -9999

0.015 0.015 0.015 0.015 0.015 0.015

0.015 0.015 0.015 0.015 0.015 0.2 0.015

0.015 0.015 0.015 0.015 0.015 0.015

#include<iostream>
#include<fstream>
#include<vector>
#include<string>
#include<sstream>

using namespace std;

void test()
{
    vector<vector<string>>v1;
    double array[543][220];
    int i = 0, j = 0;
    string lineStr;
    char* end;
    ifstream manning;
    manning.open("C:\\Users\\lch\\Desktop\\C++\\MM\\manning.asc", ios::in);
    if (!manning.is_open())
    {
        cout << "文件打开失败" << endl;

    }
    while (getline(manning, lineStr))
    {
        stringstream ss(lineStr);
        string str;
        vector<string>linearray;
        while (getline(ss, str, ' '))
        {
            vector<vector<string>>::iterator it = v1.begin();
            for (int zz = 0; zz < 12; zz++)
            {
                it = v1.erase(it);

            }
            array[i][j] = atof(const_cast<const char*> (str.c_str()));
            j++;
        }
        i++;
    }

    manning.close();
    for (int i = 0; i < 543; i++)
    {
        for (int j = 0; j < 220; j++)
        {
            cout << array[i][j] << endl;
        }
    }

}

int main()
{
    test();

    system("pause");
    return 0;
}

这是我改写的一个代码，想通过循环删除vector容器中的第一个元素，把开头那六行删掉，把剩下从-9999开始的所有数字存到二维数组。方便后面计算，但是我在运行时提示如下错误

void _Tidy() noexcept { // free all storage
        auto& _My_data    = _Mypair._Myval2;
        pointer& _Myfirst = _My_data._Myfirst;
        pointer& _Mylast  = _My_data._Mylast;
        pointer& _Myend   = _My_data._Myend;

        _My_data._Orphan_all();

        if (_Myfirst) { // destroy and deallocate old array  **_引发了异常: 读取访问权限冲突。this 是 nullptr。_**

            _Destroy(_Myfirst, _Mylast);
            _Getal().deallocate(_Myfirst, static_cast<size_type>(_Myend - _Myfirst));

            _Myfirst = pointer();
            _Mylast  = pointer();
            _Myend   = pointer();
        }
    }

请问大神们该怎么改？或者又什么方法能让我跳过前六行只读取后面的那些数字？

Answer 1

void test()
{
    double array[543][220];
    memset(array, 0, sizeof(array));
    int i = 0, j = 0, line = 0;
    string lineStr;
    char* end;
    ifstream manning;
    manning.open("E:\\manning.asc", ios::in);
    if (!manning.is_open())
    {
        cout << "文件打开失败" << endl;

    }
    while (getline(manning, lineStr))
    {
        if (++line <= 6)
            continue;
        stringstream ss(lineStr);
        string str;
        j = 0;
        while (getline(ss, str, ' '))
        {
            array[i][j] = atof(const_cast<const char*> (str.c_str()));
            j++;
        }
        i++;
    }

    manning.close();
    for (int i = 0; i < 543; i++)
    {
        for (int j = 0; j < 220; j++)
        {
            cout << array[i][j] << " ";
        }
        cout << endl;
    }
}