#include <stdio.h>

int g = 10; //global variable: data section on memory

void f(int x);

int main(void){
    int i = 10;             // local variable stack
    char v[] = "Hello";     // v is a local variable on the stack of size 6 bytes                          
    char *s = "Hello";	    // s is a local variable on the stack
    			            // that points to constant read only string in the data section	       
    int *n = malloc(10);    // n is a locat variable on the stack
                            // that points to a chunk of malloced memory on the heap

    return 0;
}