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Problem calculating days between 2 dates
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Originally Posted by Ancient Dragon 
>>difftime()
I see absolutely no value in that function because all it does is subtract the two parameter values and return the result as a double. When time_t is an (unsigned)integer then the double return value is just plain inconvenient because it would have to be typecast back to time_t. So the program might as well just subtract the two time_t objects and be done with it.
"One of the methods used by statists to destroy capitalism consists in establishing controls that tie a given industry hand and foot, making it unable to solve its problems, then declaring that freedom has failed and stronger controls are necessary." --Ayn Rand
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>>that rather than doing it the "right" way, the "easy" way was chosen?
You consider calling a function just to subtract two numbers is the "right way"
What a waste of cpu time.
You consider calling a function just to subtract two numbers is the "right way"
What a waste of cpu time. •
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Originally Posted by Ancient Dragon
>>that rather than doing it the "right" way, the "easy" way was chosen?
You consider calling a function just to subtract two numbers is the "right way"
time_t is a measure of seconds. This is not necessarily true. Is writing potentially buggy code a better use of CPU time? Last edited by Dave Sinkula; Jun 19th, 2009 at 4:02 pm.
"One of the methods used by statists to destroy capitalism consists in establishing controls that tie a given industry hand and foot, making it unable to solve its problems, then declaring that freedom has failed and stronger controls are necessary." --Ayn Rand
time_t is only guarenteed to be an integral type on POSIX systems.
Last edited by Sturm; Jun 19th, 2009 at 4:14 pm.
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Time type
Type capable of representing times and support arithmetical operations.
This type is returned by the time function and is used as parameter by some other functions of the <ctime> header.
It is almost universally expected to be an integral value representing the number of seconds elapsed since 00:00 hours, Jan 1, 1970 UTC. This is due to historical reasons, since it corresponds to a unix timestamp, but is widely implemented in C libraries across all platforms.
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