C++中的ofstream错误
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ofstream error in c++
提问by Viet
I am getting an ofstream error in C++, here is my code
我在 C++ 中遇到了一个 ofstream 错误，这是我的代码
int main () {
ofstream myfile;
myfile.open ("example.txt");
myfile << "Writing this to a file.\n";
myfile.close();
return 0;
}
error from Dev-C++ 10
来自 Dev-C++ 10 的错误
C:\devp\main.cpp aggregate `std::ofstream OutStream' has incomplete type and cannot be defined
C:\devp\main.cpp 聚合 `std::ofstream OutStream' 类型不完整，无法定义
Thanks in advance
提前致谢
回答by Viet
You can try this:
你可以试试这个：
#include <fstream>
int main () {
std::ofstream myfile;
myfile.open ("example.txt");
myfile << "Writing this to a file.\n";
myfile.close();
return 0;
}
回答by Viet
The file streams are actually defined in <fstream>.
文件流实际上是在<fstream>.
回答by Sebastián Mestre
You may not be including the appropiate header file.
您可能没有包含适当的头文件。
adding #include <fstream>at the beggining of your source file should fix the error.
将#include <fstream>在源文件的beggining应该修正这个错误。
回答by Naveen
I think it is a simple spelling mistake offstream instead of ofstream.
我认为这是一个简单的拼写错误 offstream 而不是 ofstream。
回答by 1800 INFORMATION
Probably, you are including the wrong header file. There is a header <iosfwd> that is used for header files that need to reference types from the STL without needing a full declaration of the type. You still are required to include the proper header <iostream> in order to use the types in question.
可能，您包含了错误的头文件。有一个头文件 <iosfwd> 用于需要从 STL 引用类型而不需要类型的完整声明的头文件。您仍然需要包含正确的标头 <iostream> 才能使用相关类型。
