Data logger shield sd card and real time clock

1#include <Wire.h>
2#include <ds3231.h>
3#include <SPI.h> 
4#include  <SD.h>  
5
6const char* filename = "time.txt";
7
8File file;
9
10struct  ts t;
11
12void setup() {
13  Serial.begin(9600);
14  Wire.begin();
15  DS3231_init(DS3231_INTCN);
16  if (!SD.begin(10)) {
17    Serial.println("Error : Push the reset button");
18    for (;;); 
19  }
20  
21  file = SD.open(filename, FILE_WRITE);
22  /*----------------------------------------------------------------------------
23    In order to synchronise your clock module, insert timetable values below !
24    ----------------------------------------------------------------------------*/
25  t.hour = 12;//hours
26  t.min = 54;//minutes
27  t.sec = 20;//seconds
28  t.mday  = 2;//date
29  t.mon = 12;// month
30  t.year = 2120;//year
31
32  DS3231_set(t);
33}
34
35void  loop() {
36  DS3231_get(&t);
37  Serial.print("Date : ");
38  file.print("Date  : ");
39  file.flush();
40  Serial.print(t.mday);
41  file.print(t.mday);
42  file.flush();
43  Serial.print("/");
44  file.print("/");
45  file.flush();
46  Serial.print(t.mon);
47  file.print(t.mon);
48  file.flush();
49  Serial.print("/");
50  file.print("/");
51  file.flush();
52  Serial.print(t.year);
53  file.print(t.year);
54  file.println();
55  file.flush();
56  Serial.print("\	 Hour : ");
57  file.print("\	  Hour : ");
58  file.flush();
59  Serial.print(t.hour);
60  file.print(t.hour);
61  file.flush();
62  Serial.print(":");
63  file.print(":");
64  file.flush();
65  Serial.print(t.min);
66  file.print(t.min);
67  file.flush();
68  Serial.print(".");
69  file.print(".");
70  file.flush();
71  Serial.println(t.sec);
72  file.println();
73  file.flush();
74
75  delay(1000);
76}