C ---it is hard to say love to you !

source code :

int accum  = 0;
int sum(int a,int b)
{
    int t=a+b;
    accum += 0;
    return t;
}

int main()
{
    return sum(1,3);
}

code.o  汇编语言

00000000 :
0:	8b 44 24 08          	mov    0x8(%esp),%eax
4:	03 44 24 04          	add    0x4(%esp),%eax
8:	c3                   	ret

main.o
汇编语言：

080483b4 :
80483b4:	8b 44 24 08          	mov    0x8(%esp),%eax
80483b8:	03 44 24 04          	add    0x4(%esp),%eax
80483bc:	c3                   	ret
80483bd:	90                   	nop
80483be:	90                   	nop
80483bf:	90                   	nop

080483c0 :
80483c0:	55                   	push   %ebp
80483c1:	89 e5                	mov    %esp,%ebp
80483c3:	83 e4 f0             	and    $0xfffffff0,%esp
80483c6:	83 ec 10             	sub    $0x10,%esp
80483c9:	c7 44 24 04 03 00 00 	movl   $0x3,0x4(%esp)
80483d0:	00
80483d1:	c7 04 24 01 00 00 00 	movl   $0x1,(%esp)
80483d8:	e8 d7 ff ff ff       	call   80483b4
80483dd:	c9                   	leave
80483de:	c3                   	ret
80483df:	90                   	nop

需要注意的函数sum编译成汇编语言以后，以及在link以后的在反汇编回来是不一样的，需要主要的变量accum 的值。

C 想说爱你真的不容易啊