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;
}file handling in c++
// basic file operations
#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;
}file handling in c++
#include <iostream>
#include <fstream>
#include <cstring>
#include <process.h>
using namespace std;
int main()
{
char name[999]; //Used to store data
ofstream writeMode; //Created object of ofstream
writeMode.open("name.dat"); //Opened the file in write mode
cout<<"******** Writing into file ********"<<endl;
cout<<"Enter your name: ";
cin.getline(name, 999); //Accepts string with spaces and after spaces eg ____ ____
writeMode<<name<<endl; //Putted data inside the file
cout<<"Enter your age: ";
cin>>name;
cin.ignore(); //Wrote because number is accepted :P, may be
writeMode<<name<<endl; //Again putted data inside the file
writeMode.close(); //Closed the write mode
ifstream readMode; //Created object of ifstream
readMode.open("name.dat"); //Opened the file in read mode.
cout<<"******** Reading into file ********"<<endl;
readMode>>name;
cout<<name<<endl; //Write the data to the screen
readMode>>name; //again read the data from the file and display it
cout<<name<<endl;
readMode.close(); //Closed the read mode
system("pause");
return 0;
}Copyright © 2021 Codeinu
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