How to iterate through a struct array properly?

Question

I've seen several threads on this, but I'm still not understanding why I've having the problem of going through my struct array.

So I have a header file with two typedef structs that I use in my c source code:

typedef struct Point{
    int y;
    int x;
} point;

typedef struct Room{
    point top_left;
    point top_right;
    point bottom_left;
    point bottom_right;
} room;



#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "dungeon.h"

#define HEIGHT 105
#define WIDTH 160

int randomSeed();
void createDungeon();

int main() {
    createDungeon();
    return 0;
}

void createDungeon(){
    char dungeonGrid[HEIGHT][WIDTH];
    room *rooms = malloc(10 * sizeof(room));
    int i,y,x;
    int a;

    for(i = 0; i < 10; i++){
        srand(randomSeed());
        int height = (rand() % (10 + 1 - 5)) + 5;
        int width = (rand() % (15 + 1 - 7)) + 7;

        int randomY = (rand() % (105 + 1 - 0)) + 0;
        int randomX = (rand() % (160 + 1 - 0)) + 0;

        rooms[i].top_left.y = randomY;
        rooms[i].top_left.x = randomX;
        rooms[i].top_right.y = randomY;
        rooms[i].top_right.x = randomX + width;
        rooms[i].bottom_left.y = randomY + height;
        rooms[i].bottom_left.x = randomX;
        rooms[i].bottom_right.y = randomY + height;
        rooms[i].bottom_right.x = randomX + width;

    }

   for(y = 0; y < HEIGHT; y++){
        for(x = 0; x < WIDTH; x++){
            dungeonGrid[y][x] = ' ';
        }
    }

    for(y = 0; y < HEIGHT; y++){
        for(x = 0; x < WIDTH; x++){
            for(a = 0; a < 10; a++){
                if(rooms[a].top_left.y <= y  &&  y <= rooms[a].bottom_left.y && rooms[a].top_left.x <= x  && rooms[a].top_right.x >= x){
                    dungeonGrid[y][x] = '.';
                }
            }
        }
    }


    for(y = 0; y < HEIGHT; y++){
        for(x = 0; x < WIDTH; x++) {
            printf("%c", dungeonGrid[y][x]);
        }
        printf("\n");
    }

}

in

t randomSeed(){
    srand(time(NULL));
    int randNum = (rand() % (100000 + 1 - 0)) + 0;
    return randNum;
}

What I'm trying to do: Basically I'm making a dungeon of size 105x160, with random sized rooms inside of it. These rooms are going to be shown in the terminal as a set of rows and columns that use the character '.' I'm basically using a for loop to find a random x and random y on the dungeon grid, and use that as my starting point to place a room. I'm also using rand() to get a random height and width. The minimum height and width needs to be 7x5 and I just chose an arbitrary number for the maximum size that it should be.

The problem: I checked the pointer for my rooms struct (*rooms) and found that at rooms[0 - 9], all of the points for top_left, top_right, etc are exactly the same number and it shouldn't be.

My Question: How do I properly iterate through my struct array, so that the there are different coordinates for each room? Maybe there is something wrong with the way I call rand()? I made a method to get various random numbers and I thought that my for loops would call that method and give a random number each time, so my coordinates will be different for each room.