• C

to find the previous date

A program in C to accept a date and to print its previous date and its next date
ASWINAsked:
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AlexVirochovskyCommented:
again homework!
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sumant032199Commented:
How do you guys guess that it is homework problem? ASWIN has no profile.
Sometimes problems are simple like elemetary homework problems but not always.
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aperdonCommented:
Use the following functions...

tzset
localtime
strftime

localtime will return a struct tm *
then add/substract one day

the result to strftime

Alexander


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aperdonCommented:
Forget the previous answer, here is more
use the tm_yday item in the tm struct to set the day. Use the localtime and strftime functions, and the struct tm.

time_t now:
struct tm *tmnow;
struct tm tmtomorrow:
char szTomorrow[128]:

now = time(NULL);
tzset();
tmnow = localtime();
memset(&tmtomorrow,0,sizeof(struct tm));
tmtomorrow.tm_yday = tmnow->tm_yday + 1;
strftime(szTomorrow,128,"%x",&tmtomorrow);



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