scanf reads every double wrong

Question

I have the following code:

    int main(void)
{
    double r;
    scanf("lf",&r);
    printf("%lf\n",r);
}

Any value I enter returns a nonsense-number with about 40-50 digits. scanf works fine with chars, integers, strings etc., but with doubles I get this problem. Can anybody help me?

Answer 1

scanf("lf",&r);

Should be

scanf("%lf",&r);