Lista 3 - Exercício 32

#include <stdio.h>

int main()
{
    int day,month,year,newday,newmonth,newyear,add;

    printf("Entre com a data completa :\n");
    scanf("%d %d %d",&day,&month,&year);
    printf("Entre com a quantidade de dias a ser somada :\n");
    scanf("%d",&add);

    newmonth = month;
    newday = day;
    newyear = year;

    while(add>0)
    {
        if ((month == 4)||(month == 6)||(month == 9)||(month == 11))
        {
            newday = newday + add;
            if (newday>30)
            {
                add = newday - 30;
                newday = 0;
                newmonth++;
            }
            else
            {
                add = 0;
            }

        }
        if (month == 2)
        {
            newday = newday + add;
            if (((year%4 == 0)&&(year%100 != 0))||(year%400 == 0))
            {
                if (newday>29)
                {
                    add = newday - 29;
                    newday = 0;
                    newmonth++;
                }
                else
                {
                    add = 0;
                }
            }
            else
            {
                if (newday>28)
                {
                    add = newday - 28;
                    newday = 0;
                    newmonth++;
                }
                else
                {
                    add = 0;
                }
            }
        }
        else
        {
            newday = newday + add;
            if (newday>31)
            {
                if (month == 12)
                {
                    add = newday - 31;
                    newday = 0;
                    newmonth = 1;
                    newyear++;
                }
                else
                {
                    add = newday - 31;
                    newday = 0;
                    newmonth++;
                }
            }
            else
            {
                add = 0;
            }
        }
    }
    printf("%d / %d / %d\n",newday,newmonth,newyear);
    return 0;
}