I am getting an ofstream error in C++, here is my code
#include <iostream>
int main() {
std::ofstream myfile;
myfile.open("example.txt");
myfile << "Writing this to a file.\n";
myfile.close();
return 0;
}
error from Dev-C++ 10
C:\devp\main.cpp aggregate `std::ofstream OutStream' has incomplete type and cannot be defined
You can try this:
#include <fstream>
int main () {
std::ofstream myfile;
myfile.open ("example.txt");
myfile << "Writing this to a file.\n";
myfile.close();
return 0;
}
You may not be including the appropiate header file.
adding #include <fstream> at the beggining of your source file should fix the error.
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.
Add #include <fstream>.
Code:
#include <iostream>
#include <fstream>
using namespace std;
int main() {
std::ofstream myfile;
myfile.open("example.txt", std::ios::out);
myfile << "Writing this to a file\n";
myfile.close();
return 0;
}
I faced the same error because I forgot to use using namespace std;
after including it, the problem was solved.
