文件输入[C++]出现问题

我第一次尝试从一个.txt文件中读取数据。以下是我的代码：

Level::ReadStream(std::fstream data)
{
bool write = false;
char* p = data.tellg();
while(!data.eof())
{
    int i = 0, j = 0;
    if(&p == '[')
    {
        write == true;
    }
    if(write == true)
    {
        mapX[i] = p;
        mapY[j] = p;
    }
    if(&p == '/n')
    {
        i++;
        j++;
    }
    else
    {
        i++;
    }
    *p++
}
};
void Level::SetMapSize(std::fstream data)
{
int* p = data.tellg();
int sizeX = 0;
int sizeY = 0;
while(!data.eof())
{
    if(&p != '[' && &p != ']' && &p != 'n')
    {
        sizeX++;
    }
    else if(&p != 'n')
    {
        sizeY++;
    }
}
mapX.resize(sizeX);
mapY.resize(sizeY);
std::cout << sizeX << 'n' << sizeY;
};

这两个功能的目标是：1-读取文件中的所有字符，如果当前字符不是括号，则将其添加到索引映射（X，Y）中，然后增加计数器，以便将下一个非括号值放入正确的索引中。

2-读取所有文件，并像以前一样计算非括号值，这样可以使mapX和mapY的大小正确。

然而，它不起作用，我得到了这些错误：

 C:...Level.cpp|58|warning: multi-character character constant|
 c:...mingwbin..libgccmingw324.4.1includec++bitsios_base.h|790|error: 'std::ios_base::ios_base(const std::ios_base&)' is private|
 c:...mingwbin..libgccmingw324.4.1includec++iosfwd|47|error: within this context|
 c:...mingwbin..libgccmingw324.4.1includec++iosfwd|87|note: synthesized method 'std::basic_ios<char, std::char_traits<char> >::basic_ios(const std::basic_ios<char, std::char_traits<char> >&)' first required here |
 c:...mingwbin..libgccmingw324.4.1includec++streambuf|770|error: 'std::basic_streambuf<_CharT, _Traits>::basic_streambuf(const std::basic_streambuf<_CharT, _Traits>&) [with _CharT = char, _Traits = std::char_traits<char>]' is private|
 c:...mingwbin..libgccmingw324.4.1includec++iosfwd|78|error: within this context|
 c:...mingwbin..libgccmingw324.4.1includec++iosfwd|87|note: synthesized method 'std::basic_filebuf<char, std::char_traits<char> >::basic_filebuf(const std::basic_filebuf<char, std::char_traits<char> >&)' first required here |
C:...Level.cpp||In constructor 'Level::Level()':|
C:...Level.cpp|24|note: synthesized method 'std::basic_fstream<char, std::char_traits<char> >::basic_fstream(const std::basic_fstream<char, std::char_traits<char> >&)' first required here |
C:...Level.cpp|24|error:   initializing argument 1 of 'void Level::SetMapSize(std::fstream)'|
C:...Level.cpp|29|error: 'cout' was not declared in this scope|
C:...Level.cpp|38|error: ISO C++ forbids declaration of 'ReadStream' with no type|
C:...Level.cpp|38|error: prototype for 'int Level::ReadStream(std::fstream)' does not match any in class 'Level'|
C :...Level.cpp|17|error: candidate is: void Level::ReadStream(std::fstream)|
C:...Level.cpp||In member function 'void Level::SetMapSize(std::fstream)':|
C:...Level.cpp|75|error: invalid conversion from 'std::streamoff' to 'int*'|
C:...Level.cpp|81|error: ISO C++ forbids comparison between pointer and integer|
C:...Level.cpp|81|error: ISO C++ forbids comparison between pointer and integer|
C:...Level.cpp|81|error: ISO C++ forbids comparison between pointer and integer|
C:...Level.cpp|86|error: ISO C++ forbids comparison between pointer and integer|
C:...Level.cpp|95|error: 'cout' is not a member of 'std'|
||=== Build finished: 15 errors, 1 warnings ===|

有人能帮忙吗？

编辑：好的，我改变了一切。我的新代码是：

void Level::ReadStream()
{
long p = textData.tellg();
int counter = 0;
int i = 0;
int j = 0;
char ch;
while(p != textData.eof())
{
    textData.seekg(counter);
    textData >> ch;
    if(ch != '[' && ch != ']')
    {
        mapX[i] = ch;
        mapY[j] = ch;
        i++;
        if(ch == 'n')
        {
            i = 0;
            j++;
        }
    }
    counter++;
    p = textData.tellg();
}
};

其中mapX和mapY为5 int长。现在它进行编译，但挂起并崩溃。我不明白为什么。。。有人能帮我吗？