Create a pointer to a function in C

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

double sum(double x, double y) {
    return x + y;
}

int main()
{
  double (*stat)(double  , double);
  
  stat = sum;
  double Sum;

  Sum = stat(3.5, 5);
  printf("sum = %f ", Sum);

  return 0;
}