#include <stdio.h>

int main()
{
    int start, end, i, flag;

    printf("Enter the number to Start: ");
    scanf("%d", &start);

    printf("Enter the number to End: ");
    scanf("%d", &end);

    printf("Prime numbers between %d and %d are: ", start, end);

    while (start < end)
    {
        flag = 0;

        if (start <= 1)
        {
            ++start;
            continue;
        }
        
        for (i = 2; i <= start / 2; ++i)
        {
            if (start % i == 0)
            {
                flag = 1;
                break;
            }
        }

        if (flag == 0)
        {
            printf("%d ", start);
        }

        ++start;
    }

    return 0;
}