Have been trying to learn C and complete an assignment that gives the RMS of a set of input numbers but the program crashes when run. Any advice appreciated on what's wrong with the code?

Code:#include <stdio.h> #include <math.h> double RMS(double *x, int N) { int i; double sum =0.0; for (i=0; i<N; i++) { sum = sum + pow(x[i],2); } double question = sum/N; sqrt (question); return question; } int main() { int i, N; double question; double x [N]; printf("Enter the number of values in the sequence please: \n"); scanf("%d", &N); for (i=0;i<N;i++) { printf("Enter the numbers in the sequence please: \n"); scanf("%lf", &x[i]); } question = RMS(x,N); printf(" The RMS of your selected numbers is: %f. \n", RMS); return 0; }