Need Help on Using cin With Arrays

[jharthwick]

Hey, this is my first post on this forum so I'm not exactly sure how to format the code (or whether this is the right place to post, but I think it is...)
If I've broken any guidelines, please tell me! Thanks.

Anyway, I have a code written to receive input from a user. What this program is supposed to do is assign every other value entered by the user as a double and all operators as a char. Later, the chars will be compared to decide on PEMDAS, etc...

However, I keep getting an error when I compile. I've searched for this error on other posts, but I can't find a solution that works (for me). I think this may be because of the cin putting a value into a double array that uses an int for its element number, but I'm not sure. Can anyone help me solve this?

Code:

#include <iostream>
#include "operdecide.h"
#include "calculator.h"

using namespace std;

double calculator()
{
  double param[50] = {0};
  char ops[50] = {0};
  double answer;
  int n = 0;
  int x = 0;
  cin
    >> param[x]
    >> ops[n]
    >> param[x + 1]
  ;
  ++x;
  while(cin.get() != '\n')
  {
    cin
      << ops[n]
      << param[x]
    ;

    ++n;
    ++x;
  }

  answer = operdecide(param, ops);

  return answer;

}

Error:
calculator.cpp:35:7: error: invalid operands to binary expression ('int' and 'double')
<< param[x]
^ ~~~~~~~~

[xismn]

On lines 23 and 24, that's not the extraction operator.

[Stephanie16]

Use >> on line 23 and 24 instead of <<.