hw43 debug session.

$ lldb ../../bin/hw43
(lldb) target create "../../bin/hw43"
Current executable set to '../../bin/hw43' (x86_64).
(lldb) l
   5   	int main(int argc, char const * argv[]) {
   6
   7   	  int a = 0;
   8   	  int b;
   9   	  int c = 0;
   10
   11  	  printf("a=%p b=%p c=%p\n", &a, &b, &c);
   12
   13  	  return 0;
   14  	}
(lldb) breakpoint set --file hw43.c --line 7
Breakpoint 1: where = hw43`main + 15 at hw43.c:7:7, address = 0x0000000100000f49
(lldb) breakpoint set --file hw43.c --line 9
Breakpoint 2: where = hw43`main + 22 at hw43.c:9:7, address = 0x0000000100000f50
(lldb) breakpoint set --file hw43.c --line 13
Breakpoint 3: where = hw43`main + 61 at hw43.c:13:10, address = 0x0000000100000f77
(lldb) process launch
Process 42721 launched: '/XXXX/bin/hw43' (x86_64)
Process 42721 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1
    frame #0: 0x0000000100000f49 hw43`main(argc=1, argv=0x00007ffeefbff3f8) at hw43.c:7:7
   4
   5   	int main(int argc, char const * argv[]) {
   6
-> 7   	  int a = 0;
   8   	  int b;
   9   	  int c = 0;
   10
Target 0: (hw43) stopped.
(lldb) frame variable
(int) argc = 1
(const char **) argv = 0x00007ffeefbff3f8
(int) a = 1
(int) b = 20517
(int) c = 32766
(lldb) continue
Process 42721 resuming
Process 42721 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 2.1
    frame #0: 0x0000000100000f50 hw43`main(argc=1, argv=0x00007ffeefbff3f8) at hw43.c:9:7
   6
   7   	  int a = 0;
   8   	  int b;
-> 9   	  int c = 0;
   10
   11  	  printf("a=%p b=%p c=%p\n", &a, &b, &c);
   12
Target 0: (hw43) stopped.
(lldb) frame variable
(int) argc = 1
(const char **) argv = 0x00007ffeefbff3f8
(int) a = 0
(int) b = 20517
(int) c = 32766
(lldb) continue
Process 42721 resuming
a=0x7ffeefbff3cc b=0x7ffeefbff3c8 c=0x7ffeefbff3c4
Process 42721 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 3.1
    frame #0: 0x0000000100000f77 hw43`main(argc=1, argv=0x00007ffeefbff3f8) at hw43.c:13:10
   10
   11  	  printf("a=%p b=%p c=%p\n", &a, &b, &c);
   12
-> 13  	  return 0;
   14  	}
   15
Target 0: (hw43) stopped.
(lldb) frame variable
(int) argc = 1
(const char **) argv = 0x00007ffeefbff3f8
(int) a = 0
(int) b = 20517
(int) c = 0
(lldb) continue
Process 42721 resuming
Process 42721 exited with status = 0 (0x00000000)
(lldb) quit