Example memory layout

memory-layout.c

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

int init_global_var = 10;        /* Initialized global variable */
int global_var;                  /* Uninitialized global variable */
static int init_static_var = 20; /* Initialized static variable in global scope */
static int static_var;           /* Uninitialized static variable in global scope */

int main(int argc, char **argv, char **envp)
{
        static int init_static_local_var = 30;   /* Initialized static local variable */
        static int static_local_var;             /* Uninitialized static local variable */
        int init_local_var = 40;                 /* Initialized local variable */
        int local_var;                           /* Uninitialized local variable */
        char *dynamic_var = (char*)malloc(100);  /* Dynamic variable */

        printf("Address of initialized global variable: %p\n", &init_global_var);
        printf("Address of uninitialized global variable: %p\n", &global_var);
        printf("Address of initialized static variable in global scope: %p\n", &init_static_var);
        printf("Address of uninitialized static variable in global scope: %p\n", &static_var);
        printf("Address of initialized static variable in local scope: %p\n", &init_static_local_var);
        printf("Address of uninitialized static variable in local scope: %p\n", &static_local_var);
        printf("Address of initialized local variable: %p\n", &init_local_var);
        printf("Address of uninitialized local variable: %p\n", &local_var);
        printf("Address of dynamic variable: %p\n", dynamic_var);
        printf("Address of function (code): %p\n", &main);
        printf("Address of argc variable: %p\n", &argc);
        printf("Address of argv variable: %p\n", &argv[0]);
        printf("Address of environment variable: %p\n", &envp[0]);

        exit(0);
}