http://bbs.csdn.net/topics/391018240?page=1#post-399111712
我又多番研究，找到一点蛛丝马迹，会不会和“结构体对齐”或者“c++对象内存布局”有点关系，但是我目前所学知识还不能理解这个现象，分隔线上面和下面有啥区别？？？
各位看看下面代码：
struct test_struct
{
MYSQL fuck_mysql;
int fuck_int;
};
void foo()
{
test_struct ts;
ts.fuck_int = 0;
if (!mysql_init(&ts.fuck_mysql))
{
cout << "mysql_init error. ret:" << string(mysql_error(&ts.fuck_mysql)) << endl;
}
if (!mysql_real_connect(&ts.fuck_mysql,
"192.168.111.120",
"root",
"123",
0,
3306, NULL, 0))
{
cout << "mysql_real_connect error. ret:" << string(mysql_error(&ts.fuck_mysql)) << endl;
}
cout << "ts.fuck_int:" << ts.fuck_int << endl;
cout << "-----------------------------------分隔线-----------------------------------------------" << endl;
int before = 0;
MYSQL connection;
int after = 0;
if (!mysql_init(&connection))
{
cout << "mysql_init error. ret:" << string(mysql_error(&connection)) << endl;
}
if (!mysql_real_connect(&connection,
"192.168.111.120",
"root",
"123",
0,
3306, NULL, 0))
{
cout << "mysql_real_connect error. ret:" << string(mysql_error(&connection)) << endl;
}
cout << "before:" << before << endl;
cout << "after:" << after << endl;
}
得到结果是：
ts.fuck_int:17765728
-----------------------------------分隔线-----------------------------------------------
before:0
after:0
这个地方，fuck_int和after有啥区别呢？？？
