what is the error for this code and why this is an error?

The function assign_vals () takes 2 parameters: an array of type double and an int. It then calculates and prints out the result of 2*i+1 and does not return anything. However, the code produces the wrong output when executed as shown in the figure below. Rewrite the single line of code that will fix this bug. 8 main.c 1 #include 2. 3 void assign_vals(double xx[], int num_of_elements); 4- int main() { 5 int N = 10; 6 double arr_xx[N]; 7 arr_xx = assign_vals(arr_xx, N); 9 10 return 0; 11 } 12 13 - void assign_vals(double xx[], int num_of_elements) { 14 int i=0; 15 - for (i=0; i