Question mark behind local time

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I want to display the system time in windows and recorde a video but I dont know why there is a question mark behind the year part of the time. Anybody know why?

Code that I am using:

#include <C:\Users\AM\Desktop\Project\opencv\build\include\opencv2\objdetect\objdetect.hpp>
#include <C:\Users\AM\Desktop\Project\opencv\build\include\opencv2\highgui\highgui.hpp>
#include <C:\Users\AM\Desktop\Project\opencv\build\include\opencv2\imgproc\imgproc.hpp>
#include <C:\Users\AM\Desktop\Project\opencv\build\include\opencv\cv.h>
#include <C:\Users\AM\Desktop\Project\opencv\build\include\opencv2\core\core.hpp>
#include <C:\Users\AM\Desktop\Project\opencv\build\include\opencv2\videostab\optical_flow.hpp>
#include <C:\Users\AM\Desktop\Project\opencv\build\include\opencv2\videostab\videostab.hpp>

#include <iostream>
#include <stdio.h>
#include <time.h>

using namespace std;
using namespace cv;

int numFaces;
int numEyes;

 /** Function Headers */
 void detectAndDisplay( Mat frame );
 void videoRecord (Mat frame);

 /** Global variables */
 String face_cascade_name = "haarcascade_frontalface_alt.xml";
 String eyes_cascade_name = "haarcascade_eye_tree_eyeglasses.xml";

 CascadeClassifier face_cascade;
 CascadeClassifier eyes_cascade;
 string window_name = "Capture - Face detection";
 RNG rng(12345);

 VideoCapture capture;
 VideoWriter record;

 time_t now;

 /** @function main */
 int main( int argc, const char** argv )
 {

  Mat frame;

      //-- 1. Load the cascades
   if( !face_cascade.load( face_cascade_name ) ){ printf("--(!)Error loading\n"); return -1; };
   if( !eyes_cascade.load( eyes_cascade_name ) ){ printf("--(!)Error loading\n"); return -1; };

   //-- 2. Read the video stream
   capture.open(0);// = cvCaptureFromCAM( -1 );

   if( capture.isOpened() )
   {
    int width = capture.get(CV_CAP_PROP_FRAME_WIDTH);
    int height = capture.get(CV_CAP_PROP_FRAME_HEIGHT);

    capture >> frame;

    record.open("C:/Users/AM/Google Drive/Intruder.avi", CV_FOURCC('D','I','V','X'), 9, cvSize(width, height), true);

     while( true )
     {
       //frame = cvQueryFrame( capture );
       capture >> frame;

   //-- 3. Apply the classifier to the frame
       if( !frame.empty() )
       { 
           detectAndDisplay( frame ); 
          if (numEyes == 2)
           {
            videoRecord(frame);
            //numEyes = 0;
           }
       }
       else
       { printf(" --(!) No captured frame -- Break!"); break; }

         //pause for 33ms        
         if (waitKey(33) == 27) 
         break; 
       }
   } 
   return 0;
 }

/** @function detectAndDisplay */
void detectAndDisplay( Mat frame )
{
  std::vector<Rect> faces;
  Mat frame_gray;

  //time (&rawtime);
  //timeinfo = localtime (&rawtime);
  string str;
  now = time(NULL);
  str = ctime(&now);


  cvtColor( frame, frame_gray, CV_BGR2GRAY );
  equalizeHist( frame_gray, frame_gray );

  //-- Detect faces
  face_cascade.detectMultiScale( frame_gray, faces, 1.1, 2, 0|CV_HAAR_SCALE_IMAGE, Size(30, 30) );

  putText(frame, str, cvPoint(5, 25), CV_FONT_HERSHEY_SIMPLEX, 0.5, CV_RGB(0, 0, 255), 2, 8, FALSE);


  for( int i = 0; i < faces.size(); i++ )
  {
  //draw face
    Point center( faces[i].x + faces[i].width*0.5, faces[i].y + faces[i].height*0.5 );
    ellipse( frame, center, Size( faces[i].width*0.5, faces[i].height*0.5), 0, 0, 360, Scalar( 255, 0, 255 ), 4, 8, 0 );

    //get region of interest
    Mat faceROI = frame_gray( faces[i] );
    std::vector<Rect> eyes;

    //-- In each face, detect eyes
    eyes_cascade.detectMultiScale( faceROI, eyes, 1.1, 2, 0 |CV_HAAR_SCALE_IMAGE, Size(30, 30) );

    for( int j = 0; j < eyes.size(); j++ )
     {
     //draw eyes
       Point center( faces[i].x + eyes[j].x + eyes[j].width*0.5, faces[i].y + eyes[j].y + eyes[j].height*0.5 );
       int radius = cvRound( (eyes[j].width + eyes[j].height)*0.25 );
       circle( frame, center, radius, Scalar ...