C++ Input File Reading Help!

Hello guys,

I am new in this forum and i hope im gonna get some fast help.

I have this problem where i should input numbers from a .doc file, and the program should output how many times the number of occurences of each number.

ie: the numbers in the .doc file are 2,3,6,8,9,2,1,1,3,1.

The program should read the numbers from the file and outputs the following:
Number 1 = 3
Number 2 = 1 ... and so on.

I started with the following but im getting stuck.
Any help please??

Code:

---


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

int main()
{

int array[10000];
int n;

ifstream numbers( "numbers.doc", ios::in);

if(!numbers)
{
cerr << endl << "File could not be opened" << endl;
system("pause");
exit(1);
}

for (int i=0, i<10000, i++)
array[i] = 0; //initializes array

for (i=0, i<50, i++)
{
if (i=1)
array[n] += array[i];
cout << array[i];
}
{
if (i=2)
array[n] += array[i];
cout << array[i];
}

results.close();

return 0;
}

---

///and so on.

My program is not working and i neeed someone please to help me fix it ASAP,

Thanks in advance.

>> if (i=1)
The = operator assigns a value to variables, in this case it sets the value of i to one. What you're wanting here is the equality operator, which is ==. Same case with your if(i=2)

Twomers' response is gold.

And, this is a canned, dry response to any question, but try to indent your code. Perhaps the forum undid whatever formatting you had, or perhaps not.

Code:

---

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

int main()
{

  int array[10000];
  int n;

  ifstream numbers( "numbers.doc", ios::in);

  if(!numbers)
  {
      cerr << endl << "File could not be opened" << endl;
      system("pause");
      exit(1);
  }

  for (int i=0, i<10000, i++)
      array[i] = 0; //initializes array

  for (i=0, i<50, i++)
  {
      if (i==1)
        array[n] += array[i];  //What have you done with n?
      cout << array[i];
  //} //I don't think you meant this
  //{ //or this
      if (i==2)
        array[n] += array[i];
      cout << array[i];
  }

  results.close();

  return 0;
}

---

Sorry to post again, but I must say you're going about this the wrong way.

For example: you haven't actually used the input file.

Code:

---

main()
{
  //ifstream stuff...
  //error checking stuff....

  //now. Create some data structure to hold your numbers and read in the data.
  //It'd be nice if the standard library had some container that could associate
  //one number with another. Oh dip.
  //std::map<int,unsigned int> modes;
  //Now, depending on how the file is layed out, you'll have to read stuff in with
  //either >>, getline(), or read()

  //Now you have your data. Read up on std::map and you'll see how short and easy-
  //to-read your program will be.

  return 0;
}

---