题解 | #计算单位阶跃函数#

int main()
{
    int t = 0;
    while ((scanf ("%d",&t)) != EOF)
    {
        if (t > 0)
        {
            printf ("%d\n",1);
        }
        else if (t == 0)
        {
            printf ("%.1f\n",0.5);
        }
        else if (t < 0)
        {
            printf ("%d\n",0);
        }
        else 
        {
            continue;
        }
    }
    return 0;
}