/*
 * evaluation by compiler or by computing at runtime
 * HBF
*/
#include <stdio.h>

int main() {
  int r = 6 + 4;  //evaluated by compiler, assign 10 to r at runtime
  printf("%d\n", r);
  
  int a = 6, b = 4;
  int r1 = a + b; //computed by the program and assign to r1 at runtime   
  printf("%d", r1);
  return 0;
}

/*
assembly:
----
movl	$10, 28(%esp)
movl	28(%esp), %eax
movl	%eax, 4(%esp)
movl	$LC0, (%esp)
call	_printf

movl	$6, 24(%esp)
movl	$4, 20(%esp)
movl	20(%esp), %eax
movl	24(%esp), %edx
addl	%edx, %eax
movl	%eax, 16(%esp)
movl	16(%esp), %eax
movl	%eax, 4(%esp)
movl	$LC1, (%esp)
call	_printf
----
*/