c++ mysql
/*
* test.cpp
*
* Created on: 2010-5-13
* Author: Sarah
*/
#include "/usr/include/mysql/mysql.h" /*为绝对路径*/
#include <stdio.h>
#include <stdlib.h>
#include <string>
#include <iostream>
using namespace std;
int main(int argc,char *argv[])
{
char *user = "root", *pwd = "475475", *dbname = "bookman";
MYSQL mysql;
MYSQL_RES *mysql_ret;
MYSQL_ROW mysql_row;
unsigned long num_rows;
int ret;
mysql_init(&mysql);
if(mysql_real_connect(&mysql,NULL,user,pwd,dbname,0,NULL,0))
{
printf("Connection success!\n");
//sql字符串
string sqlstr;
sqlstr ="INSERT INTO booklist VALUES (3,'friend','Jack',2,1);";
if(0==mysql_query(&mysql,sqlstr.c_str()))
{
cout<<"mysql_query() insert data succeed"<<endl;
}
else
{
cout<<"mysql_query() insert data failed"<<endl;
return -1;
}
ret = mysql_query(&mysql,"select * from booklist");
if(!ret)
{
printf("Query Success!\n");
mysql_ret = mysql_store_result(&mysql);
if(mysql_ret != NULL)
{
printf("Store Result Success!\n");
num_rows = mysql_num_rows(mysql_ret);
if(num_rows &n
相关文档:
#include <stdio.h>
#include <string.h>
#include <math.h>
#define BASE 10
int intlen(long n);
int main()
{
int i, j, num, sz;
i = j = num = sz = 0;
if (!scanf("%d", &num) || num <= 0) {
printf("invalid input\n");
retu ......
数组是类型相同的对象的序列,其中的对象称为数组元素。也可以将数组想像成一连串的用下标值编号的相邻存储区。
可能在某些编程语言中,一个下标变量是不允许超出数组定义中所设的界限的。但是在C和C++中,数组是没有这种安全措施的。下面先来看看数组下标越界的几种异常结果。
&nb ......
原文:
http://www.codeproject.com/cpp/complex_declarations.asp
作者:Vikram A Punathambekar
介绍
曾经碰到过让你迷惑不解、类似于int * (* (*fp1) (int) ) [10];这样的变量声明吗?本文将由易到难,一步一步教会你如何理解这种复杂的C/C++声明:我们将从每天都能碰到的较简单的声明入手,然后逐步加入const修 ......
http://www.gamedev.net/reference/programming/features/orgfiles/page2.asp
通过四个pitfall讲解头文件的由来和好处,以及使用头文件定义inline func and template.
Remember that, as far as the compiler is concerned, there is absolutely no difference between a header file and a source file.
The key idea ......