using multiple files using C++ and saving them with same name

[tatai]

I have 60 files like summary_1, summary_2, summary_3 and so on. I need to remove the first line "time dayofyr" from each file and store them in the same file. I am using the following code, but it is giving error while converting string to chr

  #include <iostream>
#include <fstream>
#include <string>
#include<sstream>
#include<cstring>
using namespace std;
int main()
{
  
	for(int i=1;i<6;i++)
	{
  stringstream aa;

	aa<<"summary_"<<i<<".out";
	string a = aa.str();
  stringstream oo;

  oo<<"out_"<<i<<".txt";
  string o= oo.str();

   ifstream summary (a);
   ofstream out(o); //temporary data storage

   string line;
   while(getline(summary,line)) //reading the summary.out file line by line
   {
	   if(line!="time  dayofyr")
		   out<<line<<endl;
   }
   summary.close();
   out.close();
   
   char* operator
   {
	   return a.c_str();
   }
   remove(a);
   char* operator
   {
	   return a.c_str();
   }
   char* operator
   {
	   return o.c_str();
   }
   rename(o,a);
 

}

  system("pause");
  return 0;
}

[coder777]

the stream (previous to C++11) don't take std::string.

use .c_str():
ifstream summary (a.c_str());

[ne555]

¿what are you trying to do in lines 33--45?
Also, ¿is it so hard to indent your code?

[tatai]

I have used the same as in line 35. but it is showing error

[coder777]

that makes no sense at all.

change this:

   char* operator
   {
	   return a.c_str();
   }
   remove(a);
   char* operator
   {
	   return a.c_str();
   }
   char* operator
   {
	   return o.c_str();
   }
   rename(o,a);

to this

   remove(a.c_str());
   rename(o.c_str(),a.c_str());

[tatai]

thank you very much!!