How to decrease a time string by a given value

Hi,

I have a string containing a time in format: "yyyy-mm-dd:HH:MM:SS"

I have to decrease this time value by a 3-digit hour value or 3-digit day value.

What could be the best of doing it? Only way I can think of is:
1) convert the string's time into seconds
2) convert the specified value into seconds
3) subtract them
4) convert the result back to a string.

Is there a better/more efficient way of doing it???

Thanks,
- Ruchikar.

Why not get the time, store its values as integers or something so you can do the manipluation, then convert them to a string by using itoa or something for display?

Read up on the mktime function

You can say things like
tm.tm_day += 3;

Then use mktime to normalise the time back into the correct ranges.

Or you could create a struct and write functions to manipulate with it.

>yyyy-mm-dd:HH:MM:SS

Something like this perhaps.

Code:

---

struct TimeStruct
{
    int yyyy;
    int mm;
    int dd;
    int hh;
    int mm;
    int ss;
};

---