摘要： create table products( pid int primary key, [no] varchar(100) unique not null, pname varchar(100), shijian timestamp)insert products select 1,'pro1','张三'insert products select 2,'pro2','李四'insert products select 3,'pro3','王五'insert products select 4,'pro4','赵六'insert products select 5,'pro5','楚七'ins 阅读全文

摘要： main.cpp源码如下：#includeiostream/*如果没用extern "C"包含#include "My.h"，编译器会报错*//*如果不用extern "C"包含#include "My.h"，将My.c的后缀名改为cpp（My.cpp）也能编译成功*/ //extern "C"//{ #include "My.h"//}void main(){ Print();}My.h源码如下：//如果在此处声明为extern "C" void Print(); 那么在main.cpp中也不需要用extern "C"包含#include "My.h"extern void Print 阅读全文