connecting text file and functions in c++

[fentahun]

i am trying to use the text file to use for iteration to reduce the number of points using functions.

#include <iostream> // library that contain basic input/output functions
#include <fstream>  // library that contains file input/output functions
using namespace std;

int main()
{
  int array_size = 1024; // define the size of character array
    char * array = new char[array_size]; // allocating an array of 1kb
    int position = 0; //this will be used incremently to fill characters in the array

    ifstream fin("input.txt"); //opening an input stream for file test.txt
    /*checking whether file could be opened or not. If file does not exist or don't have read permissions, file
  stream could not be opened.*/
if(fin.is_open())
    {
    //file opened successfully so we are here
    cout << "File Opened successfully!!!. Reading data from file into array" << endl;
    //this loop run until end of file (eof) does not occur
        while(!fin.eof() && position < array_size)
        {
            fin.get(array[position]); //reading one character from file to array
            position++;
        }
        array[position-1] = '\0'; //placing character array terminating character

    cout << "Displaying Array..." << endl << endl;
    //this loop display all the charaters in array till \0
        for(int i = 0; array[i] != '\0'; i++)
        {
            cout << array[i];
        }
    }
    else //file could not be opened
    {
        cout << "File could not be opened." << endl;
    }
    return 0;
}
// lang algorism started
 public function lang(PointList[], Tolerance)
  key=0
  int pointList = input.txt; // use pointlist in text file used above
  endP= PointList.length-1
  do {
    endP= PointList.length-1
    if (key+1 != endP) // If there are intermediate points
      line= new Line( PointList[key], PointList[endP])
      /* Find the point with the furthest perpendicular distance */
      maxIndex= key+1
      maxD= perpendicularDistance(line, PointList[maxIndex])
      for (i=maxIndex+1; i<endP; i++)
        d= perpendicularDistance(line, PointList[i])
        if (d > maxD)
          maxIndex=i
          maxD=d
      if (maxD > Tolerance)
        endP--;
      else
        for (i=key+1; i<endP; i++)
          PointList.remove(i)
        key= endP
  } while ( endP != PointList.length-1 )
end

[weaknessforcats]

What is it you are trying to do?

It doesn't look like the posted code will even compile.

[techboy]

you must first make a File pointer and then proceed!