libxlsxwriter
 All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Pages
dates_and_times01.c
<< tutorial3.c dates_and_times02.c >>

Example of writing a dates and time in Excel using a number with date formatting. This demonstrates that dates and times in Excel are just formatted real numbers. An easier approach using a lxw_datetime struct is shown in the next example.

date_example01.png
/*
* Example of writing a dates and time in Excel using a number with date
* formatting. This demonstrates that dates and times in Excel are just
* formatted real numbers.
*
* An easier approach using a lxw_datetime struct is shown in example
* dates_and_times02.c.
*
* Copyright 2014-2017, John McNamara, jmcnamara@cpan.org
*
*/
#include "xlsxwriter.h"
int main() {
/* A number to display as a date. */
double number = 41333.5;
/* Create a new workbook and add a worksheet. */
lxw_workbook *workbook = workbook_new("date_and_times01.xlsx");
lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
/* Add a format with date formatting. */
lxw_format *format = workbook_add_format(workbook);
format_set_num_format(format, "mmm d yyyy hh:mm AM/PM");
/* Widen the first column to make the text clearer. */
worksheet_set_column(worksheet, 0, 0, 20, NULL);
/* Write the number without formatting. */
worksheet_write_number(worksheet, 0, 0, number, NULL ); // 41333.5
/* Write the number with formatting. Note: the worksheet_write_datetime()
* function is preferable for writing dates and times. This is for
* demonstration purposes only.
*/
worksheet_write_number(worksheet, 1, 0, number, format); // Feb 28 2013 12:00 PM
return workbook_close(workbook);
}