In which part of memory different variables get stored? Who will assign the value to it before starting main?

Question

As per my understanding, There are four part of memory.

• Data Segment (BSS, Non BSS)
• Code Segment
• Heap Segment
• Stack Segment

Stack segment will store all the local variables declared inside the function. Dynamically created variable will go inside heap. Initialized global variable will inside data segment - BSS area. Non-Initialized global variable will inside data segment - Non BSS area. All const variable & macro will go inside code area.

We can instruct the compiler to store particular variable at particular location inside the memory using #pragma.

I don't know where does const pointer and pointers get stored. is it inside data segment?

Please let me know my understanding is correct or not?

I have code:

#include <stdio.h>
#include <stdlib.h>

#define MAX 10
enum color{
    RED,
    GREEN,
    BLUE
};

int a;
int b=5;
static int c;
static int d=10;
extern int e;
const int f;
const int g = 15;
const int *ptr1;
int *ptr2;

int main(void) {
    // your code goes here
    int h;
    int i=20;
    static int j;
    static int k=25;
    const int l;
    const int m = 30;
    int *ptr3;
    const int *ptr4;

    return 0;
}

In this code, where does these variable a to m will get stored?