C++ equivalent of C fgets

I am looking to find a C++ fstream equivalent function of C fgets. I tried with get function of fstream but did not get what I wanted. The get function does not extract the delim character whereas the fgets function used to extract it. So, I wrote a code to insert this delim character from my code itself. But it is giving strange behaviour. Please see my sample code below;

#include <stdio.h>
#include <fstream>
#include <iostream>

int main(int argc, char **argv)
{
    char str[256];
    int len = 10;
    std::cout << "Using C fgets function" << std::endl;
    FILE * file = fopen("C:\\cpp\\write.txt", "r");
    if(file == NULL){
      std::cout << " Error opening file" << std::endl;
    }
    int count = 0;
    while(!feof(file)){
        char *result = fgets(str, len, file);
        std::cout << result << std::endl ;
        count++;
    }
    std::cout << "\nCount = " << count << std::endl;
    fclose(file);


std::fstream fp("C:\\cpp\\write.txt", std::ios_base::in);
int iter_count = 0; 
 while(!fp.eof() && iter_count < 10){

    fp.get(str, len,'\n');
    int count = fp.gcount();
    std::cout << "\nCurrent Count = " << count << std::endl;
    if(count == 0){
        //only new line character encountered
        //adding newline character
        str[1] = '\0';
        str[0] = '\n';
        fp.ignore(1, '\n');
        //std::cout << fp.get(); //ignore new line character from stream
    }
    else if(count != (len -1) ){

         //adding newline character
        str[count + 1] = '\0';
        str[count ] = '\n';
        //std::cout << fp.get(); //ignore new line character from stream
        fp.ignore(1, '\n');
        //std::cout << "Adding new line \n";
    }       

    std::cout << str  << std::endl;
    std::cout << " Stream State : Good: " << fp.good() << " Fail: " << fp.fail() << std::endl;

    iter_count++;
}
std::cout << "\nCount = " << iter_count <<  std::endl;
fp.close();


return 0;

}

The txt file that I am using is write.txt with following content: This is a new lines. Now writing second line DONE

If you observe my program, I am using fgets function first and then using the get function on same file. In case of get function, the stream state goes bad.

Can anyone please point me out what is going wrong here?

Rgds Sapan