我不知道我的代碼有什麼問題。我試圖從控制檯獲取兩個文件的文件路徑,然後使用這些文件初始化一些fstream對象,爲另一個添加ios::binary
。C++:試圖通過fstream作爲參數時刪除函數?
這裏是我的代碼的重要部分:
// Function prototypes
void INPUT_DATA(fstream);
void INPUT_TARGETS(fstream);
int main()
{
// Ask the user to specify file paths
string dataFilePath;
string targetsFilePath;
cout << "Please enter the file paths for the storage files:" << endl
<< "Data File: ";
getline(cin, dataFilePath); // Uses getline() to allow file paths with spaces
cout << "Targets File: ";
getline(cin, targetsFilePath);
// Open the data file
fstream dataFile;
dataFile.open(dataFilePath, ios::in | ios::out | ios::binary);
// Open the targets file
fstream targetsFile;
targetsFile.open(targetsFilePath, ios::in | ios::out);
// Input division data into a binary file, passing the proper fstream object
INPUT_DATA(dataFile);
// Input search targets into a text file
INPUT_TARGETS(targetsFile);
...
}
// Reads division names, quarters, and corresponding sales data, and writes them to a binary file
void INPUT_DATA(fstream dataFile)
{
cout << "Enter division name: ";
...
dataFile << divisionName << endl;
...
}
// Reads division names and quarters to search for, and writes them to a file
void INPUT_TARGETS(fstream targetsFile)
{
cout << "\nPlease input the search targets (or \"exit\"):";
...
targetsFile.write(...);
...
}
但是,Visual Studio的罵我的INPUT_DATA(dataFile);
和INPUT_TARGETS(targetsFile);
部分,他說:
function "std::basic_fstream<_Elem, _Traits>::basic_fstream(const std::basic_fstream<_Elem, _Traits>::_Myt &) [with _Elem=char, _Traits=std::char_traits<char>]" (declared at line 1244 of "c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\include\fstream") cannot be referenced -- it is a deleted function
我在頭文件周圍挖直到我找到1244行:
basic_fstream(const _Myt&) = delete;
我不知道wh這發生了。我對C++還很陌生,我可能只是做了一些愚蠢的事情,但是有人能幫忙嗎?
編輯:澄清標題
最重要的是,改變函數以使用'std :: istream&'允許它們處理的不僅僅是文件。例如,能夠通過傳入字符串流來測試其邏輯。 – chris