#include <stdio.h>
#include <string.h>
int main()
{
    int a = 10;
    char *string = "Hello World";
    char s = 'H';
    double d = 23.98908;
    long l = 343247891370492;
    // register b=10;
    // can't find the address of register variables
    printf("———————————————————————————————————————————");
    printf("\nProgram to find address of variables ");
    printf("\n———————————————————————————————————————————");
    printf("\nAddress of a      | %p", &a);
    printf("\nAddress of string | %p", &string);
    printf("\nAddress of s      | %p", &s);
    printf("\nAddress of d      | %p", &d);
    printf("\nAddress of l      | %p", &l);
    printf("\nmain address      | %p", main);
    printf("\nmain address      | %p", (void *)&main);
    printf("\n———————————————————————————————————————————\n");
    return 0;
}

kodingwindow@kw:~$ gcc kw.c
kodingwindow@kw:~$ ./a.out
———————————————————————————————————————————
Program to find address of variables 
———————————————————————————————————————————
Address of a      | 0x7fff701439cc
Address of string | 0x7fff701439d0
Address of s      | 0x7fff701439cb
Address of d      | 0x7fff701439d8
Address of l      | 0x7fff701439e0
main address      | 0x56238cd336fa
main address      | 0x56238cd336fa
———————————————————————————————————————————
kodingwindow@kw:~$