so i keep getting some seg fault issue due to the realloc in my program. I'm reallocing an array of layer_t structs, which is in a function to add an empty cake layer that's being called by another function layer_t add_fresh_layer (cake_t *cake) ( (...) cake->layers= realloc(cake->layers, sizeof(layer_t) * cake->layer_height * 2); (...) }   int add_filling_layer (cake_t *cake){ for (int i = 0; i < cake->cake_height; i++) { layer_t *layer = &cake->layers[i]; (...) for (j = 0; layer->ingred[j] != NULL; j++) { char *ingredients = layer->ingred[j];] (...) for (k = 0; k < bake->layer_count; k++) { (...) } if (...) { (...) layer_t *filling = add_fresh_layer(bake); (...) } } }} I know that the realloc is causing the address to change while the pointer for cake->layers[i] remains the same. And i know the fix here is super simple, but I can't for the life of me remember what it is

Can you help with with the following questions, regarding population genetics and the Wright Fisher model in python? 1. Go through the given WFtrajectory function and give a short explanation of what each line of code does. Pay attention to the variables in the function and explain what they contain. 2. Make a new version of the WFtrajectory function which does exactly the same thing except that instead of appending to a list it initialises a numpy vector with zeroes and fills the vector with a for loop instead of a while loop. Make a plot of the output from a few example trajectories.

In C++, create a class for a 3-dimensional array. To make it more general, allow the actual dimensionality to be 0d, 1d, 2d, or 3d. It should support indexing with operator(). If the programmer subscripts with fewer indices than you 'need' (0 for a 1d, 0 or 1 for a 2d, 0 or 1 or 2 for a 3d -- note that you can't under-subscript a 0d array), you should return the appropriately sized sub-array (of your class's type). (Note: This will require multiple overloads of operator() with different numbers of index arguments.) Since, as a template, math operations don't make sense, you'll have to for-go addition, etc. But you could use + and += for concatenation. Basically aligning the common dimensions of the two arrays and concatenating along the remaining dimension. (There can be only one for this to make sense. If there are none remaining, there are options for those kinds of things!) Make sure to overload it for proper dimensionality: Of course, you should also support input (the programmer…

Write a function in c programming language  that gets an array of points ( function is defined as : typedef struct{    int x;    Int y;   } point;   )  and sorts the array using qsort().Given two points a=(ax,ay) and b=(bx,by) we compare them as follows: 1)  if (ax)2+(ay)2 < (bx)2+(by)2, then a should come before b in the sorted array. 2)  if (ax)2+(ay)2 = (bx)2+(by)2, then we compare the points by the x coordinate. Remark: For a point a=(ax,ay) the quantity ((ax)2+(ay)2)1⁄2 is the distance of a from the (0,0). That is, we sort the points according to their distance to (0,0), and if for points at the same distance, then we sort them according to the first coordinate. You will need to implement the comparison function, and apply qsort() on the array with this comparison function. For example: -  Input: [(3,2), (7,1), (1,1), (3,4), (5,0), (7,1)] -  Expected output: [(1,1), (3,2), (3,4), (5,0), (7,1), (7,1) ] Explanation:(1,1) is first because 12+12=2 is the smallest(3,2)…