can you help me ?i want to replace line10 to 20 of the test file to test 2 file but i can`t do with fgets(st, 20, fin2)

Question

#include<iostream>
#include<fstream>
#include<string.h>
#include <stdio.h>
using namespace std;
int main()
{
ifstream fin;
ifstream fin2;
ofstream fout;
string st;
string solve[30];
int i;

fin.open("test.txt");
if(!fin)
cout<<"connot open1\n";
for(i=0 ; i<10 ; i++)
{
fin>>st;
solve[i]==st;
fout<<solve[i];
}

fin2.open("test2.txt");
if(!fin)
cout<<"connot open2\n";
int j;
i=10;
while(!fin2.eof())
{
fin>>st;

cout<<"string ["<<i<<"]---> ";
fgets(st, 20, fin2);

j = i;
i++;
}
fin2.close();
fin.close();
fout.close();

return 0;
}

Answer 1

You should not mix C file operation with C++ file operation. Those are two different stuffs.