read a file c++
// reading a text file
#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) )
{
//use line here
}
myfile.close();
}
else cout << "Unable to open file";
return 0;
}fstream in c++
#include<fstream>
int main()
{
fstream file;
/*if we use fstream then we need to specify at least one
parameter mode like ios::out or ios::in else the file will not open */
file.open("filename.txt", ios::out|ios::in);
/*all work with file*/
file.close();
return 0;
}Copyright © 2021 Codeinu
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