Unfamiliar debugger problems

I'm still a bit rusty on programming, and I have never seen these debugger complaints before.

GNU GCC in Code::Blocks

Source code:

Code:

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

int main()
{
    int cc=0;
    int accumilator=0;
    int counter=0;
    int lngb=0;
    int count=0;
    string IN;


    /* IN now needs to be converted to a C style string so that it can be manipulated
    easier and compared to what is read from the file.
    */

    int lng= IN.length();
    char in [lng];
    do
    {

        in[lngb]=IN[lngb];
lngb++;
    }
    while (cc<lngb);
    // Time to find out what word we're looking for:

    cout<<"Enter word to search file for.\n\n";
    cin>>IN;

    //Get the text data from the file.

    ofstream file_read ("A.txt");
    int F_Read_Length=file_read.length();
    char cstring [F_Read_Length];

    //Remember your safe coding practices.

    if (file_read.is_open())

    {
        do
        {

            //Convert the data from file to c style string:

            cstring[counter] = file_read[counter];
            counter++;
        }
        while (counter<F_Read_Length);
    }

    else
    {
        //oops
        cout<<"Program fail on primary file read. File could not be opened. Quitting. \n\n";
        return 0;

    }

    //Time to compare:
    do
    {
            /* If what came out of the file equals what was entered,
            accumilator in incremented by one for each character.*/
          if (in[count]==cstring[count])
    {

    accumilator++;

    }

    else {
    // Otherwise, we lose one.
    accumilator --;

    }
    count++;
    }
    while(count<lngb);
    if (accumilator==lng){

    cout<<"Perfect match.\n\n";

    }

    else {

    cout<<"Match not found.\n\n";

    }

return 0;
}

The errors that the debugger are throwing are :

error: 'struct std:fstream' has no member named length

and

error: no match for 'operator[]' in 'file_read[counter]'

Those are compiler errors, not from the debugger.
Read up on file I/O: Input/Output with files - C++ Documentation
You'll find that you can't find the length of a stream and randomly access something within a stream (generally ).