Question

I want to compare two dates “2010-08-12” and “2010-8-12” but using strcmp it is failing so please suggest any inbuilt C function or any C function to compare these dates.

Regards

Answer 1

You can write a simple and straightforward function to convert a date to a number that is good enough for ordering purposes by using strtol:

int seq_day(char *date) {
    int y = strtol(date, &date, 10);
    int m = strtol(++date, &date, 10);
    int d = strtol(++date, &date, 10);
    return (y*12+m)*31+d;
}

Call the above function on both dates, and compare the int results; the returned value will be smaller for the earlier date.