calculate the days between two dates

Question

I did a program that calculates the days different, between two dates, but I am not sure how can I add a statement that makes sure the program wont include the end date.

Answer 1

You can check if argv[7] is "include" using strcmp from , and set a variable to ignore the end date if it's not

    /* Rest of the code above */

    if (mm2= 8)
    {
        if (strcmp("include", argv[7]) == 0)
        {   
            include = 1;
        }
    }

    day_diff = dd2 - dd1;
    if (include == 0)
    {
        day_diff--;
    }
    printf("%d", day_diff);

    return 0;

But i recommend you search about getopts, a flag seems more user friendly
./daysCalculatorA -i 19 2 2019 22 4 2019