writing file line by line c++ code example
Example 1: read a file c++
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int main () {
string line;
ifstream myfile ("example.txt");
if (myfile.is_open())
{
while ( getline (myfile,line) )
{
}
myfile.close();
}
else cout << "Unable to open file";
return 0;
}
Example 2: how to read and write in a file c++
#include <iostream>
#include <fstream>
using namespace std;
ifstream file_variable;
file_variable.open("input.txt");
file_variable.close();
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while (cin >> name >> value)
{
cout << name << value << endl;
}
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ofstream out_file;
out_file.open("output.txt");
out_file << "Write this scentence in the file" << endl;