Std15.11.05_3

#include <stdio.h>

long int sum(int mode, int min, int max)
{
    int s=0;
    switch(mode)
    {
        case 0:
            do
            {
                s=s+min;
                min++;
            }while (min<=max);
            return s;
        case 1:
            if (min%2==1)
                min++;
            do
            {
                s=s+min;
                min=min+2;
            }while (min<=max);
            return s;
        case 2:
            min=min+(3-min%3);
            do
            {
                s=s+min;
                min=min+3;
            }while (min<=max);
            return s;
        case 3:
            do
            {
                if ((min*2+1)%3)
                    s=s+min;
                min=min+1;
            }while (min<=max);
            return s;
        default:
            return -1;
    }
}


int main()
{
    int a[2];
    for (int i=0;i<2;i++)
    {
        printf("Podaj %d liczbe: ",i+1);
        scanf("%d",&a[i]);
    }
    printf("1.%d\n2.%d\n3.%d\n4.%d",sum(0,a[0],a[1]),sum(1,a[0],a[1]),sum(2,a[0],a[1]),sum(3,a[0],a[1]));

    return 0;
}