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CTime

CTime is not a very complicated class. None the less, there are problems. First and foremost is exceeding data limits. A normal CTime only goes from x to y.

When constructing a CTime you can get confused as to the size of the components.

CTime ct = CTime( yr, mo, day, hr, min, sec, daylight_savings_time );

• Year is a number like 2003.
• Mo is a number of 1 to 12.
• Day is a number of 1 to 31.
• Hr is a number of 0 to 23.
• Min is a number of 0 to 59.
• Sec is a number of 0 to 59.
• Daylight_savings_time has three values. 1 means yes, 0 means no and –1 means figure it out for me.

This can be confusing when converting into and out of struct tm which has a tendency to use a slightly different base numbering system where month is 0 to 11, year is relative to 1900 and so on.

Another little thing I ran into once was getting from GMT to local time.

<<add example of how to turn GMT time into local time>>