c++ ofstream write code example
Example 1: fstream in c++
#include<fstream>
int main()
{
fstream file;
file.open("filename.txt", ios::out|ios::in);
file.close();
return 0;
}
Example 2: How to read a file in in C++
#include <iostream>
#include <iomanip>
#include <fstream>
using namespace std;
int main() {
int sum = 0;
int x;
ifstream inFile;
inFile.open("test.txt");
if (!inFile) {
cout << "Unable to open file";
exit(1);
}
while (inFile >> x) {
sum = sum + x;
}
inFile.close();
cout << "Sum = " << sum << endl;
return 0;
}
Example 3: file objects in c++
#include <iostream>
#include <fstream>
using namespace std;
int main () {
ofstream myfile;
myfile.open ("example.txt");
myfile << "Writing this to a file.\n";
myfile.close();
return 0;
}