// Example demonstrating memory addess assignments
// George F. Riley, Georgia Tech, Fall 2009

int g1;   // Global variable 1
int g2;   // Global variable 2

int sub1()
{ // First subroutine
  int s1l1;  // Sub1, local variable 1
  int s1l2;  // Sub1, local variable 2

  char* s1hello = "Hello";
  printf("Address of s1l1 is %p\n", &s1l1);
  printf("Address of s1l2 is %p\n", &s1l2);
  printf("s1hello is %p\n", s1hello);
}

int sub2()
{ // Second subroutine
  int s2l1;  // Sub1, local variable 1
  int s2l2;  // Sub1, local variable 2

  char* s2hello = "Hello";
  printf("Address of s2l1 is %p\n", &s2l1);
  printf("Address of s2l2 is %p\n", &s2l2);
  printf("s2hello is %p\n", s2hello);
}

int main(int argc, char** argv)
{
  int ml1;   // Main program, local variable 1
  int ml2;   // Main program, local variable 2
  char* p1;
  char* p2;
  char* p3;

  printf("Address of g1 is %p\n", &g1);
  printf("Address of g2 is %p\n", &g2);
  
  printf("Address of ml1 is %p\n", &ml1);
  printf("Address of ml2 is %p\n", &ml2);

  printf("Address of sub1 is %p\n", sub1);
  printf("Address of sub2 is %p\n", sub2);

  sub1();
  sub2();
  sub3();   // Defined in ex1b.c
  // Get some dynamic memory
  p1 = (char*)malloc(1);
  p2 = (char*)malloc(1);
  p3 = (char*)malloc(1);
  printf("Dynamic mem 1 is %p\n", p1);
  printf("Dynamic mem 2 is %p\n", p2);
  printf("Dynamic mem 3 is %p\n", p3);
}