Hey Guys! I have to read data from a text file, load it into an array and then bubble sort it! Here is my code:

#include <iostream>
#include <string>
#include <fstream>
using namespace std;
void Bubble_Sort(string arr[], int length);
int main()
{
    int length;
    length=10,000;
    ifstream MyFile;
    ofstream out;
    string line;
    string arr[10000];

    //out.open("Write.txt");
    MyFile.open("Movies.txt");
    if (MyFile.is_open())
    {
        while (!MyFile.eof())
        {
                //out << line << endl;
                for (int i=0; i<10000; i++)
                {
                    while (getline (MyFile,line,'\n'))
                    {
                      arr[i] = line;                            // works perfectly fine.
                    }
                }
        }
    }
    ofstream o;
    o.open("Bubble.txt");
    if (o.is_open())
    {
        cout << " file is opened " << endl;
    }
    else 
    {
        cout << " file not opened " << endl;
    }
    Bubble_Sort(arr,length);

    // writing sorted names to a text file.
    for (int i=0; i<10000; i++)
    {
        o << arr[i] << endl;
    }

    system("pause");
    return 0;
}

void Bubble_Sort(string arr[], int length)
{
    string temp;
    int iteration;
    int index;
    for (iteration=0; iteration<length; iteration++)
    {
        for (index=0; index<length-iteration; index++)
        {
            if (strcmp(arr[index],arr[index+1])){                 // error!
            temp = arr[index];
            arr[index] = arr[index+1];
            arr[index+1] = temp;
            }
        }
    }
}

Basically what i am trying to do is that sort the names of 10,000 movies and then write those names to a text file. It gives an error in the nested loop by underlining arr and tells that no suitable conversion function from std::string to const char* exists. Please help me out with this. Thanks in advance!!

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