C++ Program To Read And Display File Line By Line Using File Handling

#include <iostream>
#include <fstream>
using namespace std;

int main(int argc, char *argv[])
{
   ifstream in;
   char filename[20];
 
 cout<<"Enter The File Name With Extension\n";
 cin>>filename;
 
 in.open(filename);

/*Here You Have To Create A File And put some data on it. 
Then Save the with Any Extension With File Name As Above Shown */

   if(!in) 
   {
     cout << "Cannot Open File. Or File Not Find\n";
     return 1;
   }

   char str[1000];

 cout<<"\nFile is Given Below\n\n";
 cout<<"\n============================================================\n\n";
  
   while(in) 
   {
     in.getline(str, 1000);
     if(in) 
  cout << str << endl;
   }

 cout<<"\n\n============================================================\n";
   in.close();

  return 0;
}

Input:

Output:

4 5 1 51 15 151 5 -1

2 2 2 2 2 5 4 4 - 1

3 1 4 8 8 4 8 -1

1 4 4 8 -1 

9 8 7 6 5 4 2 1 -1