c - format ‘%f’ expects argument of type ‘float *’, but argument 2 has type ‘double *’ [-Wformat=] scanf ("%1f", &n);

Question

So here's the part of my code I'm having trouble with. The error says %f is for floats and n is a double, which I've seen in lots of other questions, but the answer was to put in a %1f instead and it still gives back the same error when I try to compile.

    #include <stdio.h>
    #include <math.h>

    int main()
    {

      //declaring variables
      double n, new_guess, guess;

      //getting data from the user
      printf ("Enter a number: ");
      scanf ("%1f", &n);

Answer 1

Use %lf instead of ℅1f for double data type, because scanf will think you are passing a pointer to a float which is a smaller size than a double, and it will return an incorrect value.,