Doxie 0 Report post Posted December 29, 2004 I got this question from a friend, anyone able to help?I have 2 time values stored in tm structure. I need to know how many seconds are between. The only function for that seems to be difftime but it works with time_b values. Am i missing anything or is there really no library function that subtracts 2 values in tm format?I got no idea Were ever i lay my script is my home... Share this post Link to post Share on other sites
SumTingWong 1 Report post Posted December 29, 2004 (edited) I got this question from a friend, anyone able to help?I got no idea <{POST_SNAPBACK}>Use mktime to convert your tm structs to time_t values and then difftime to calculate the difference.mktime on MSDNUse gmtime or localtime to convert time_t value back to tm struct Edited December 29, 2004 by pacman Share this post Link to post Share on other sites
Doxie 0 Report post Posted December 29, 2004 His answer I know - I went through this some time ago already. This limits me to years between 1970 and somewhere around 2040. Were ever i lay my script is my home... Share this post Link to post Share on other sites
SumTingWong 1 Report post Posted December 29, 2004 His answer I know - I went through this some time ago already. This limits me to years between 1970 and somewhere around 2040.<{POST_SNAPBACK}>Why did he ask for a way to subtract between 2 tm values?If you want to go back further, use SYSTEMTIME which starts from January 1, 1601. Share this post Link to post Share on other sites
