It would have helped if you indicated what line the error was at.
I notice the line
printf("%lf %lf %lf \n",obtainStatistics(pointco,n,&temp[p])); //%lf %lf
makes no sense....
But anyways, I didn't get the error you mentioned when I tried compiling your code....
But surely the error message is clear? You had an assignment, the right-hand side was of type double, and the left-hand side was of type double*.