#include <stdio.h> #include "mysql.h" #include <stdlib.h> MYSQL *init() { MYSQL *mysql, *con; mysql = mysql_init(NULL); //初始化mysql对象 if (NULL == mysql) { printf("mysql_init : %s\n", mysql_error(mysql)); return NULL; } con = mysql_real_connect(mysql, "localhost", "root", "root", "mydatabase", 0, NULL, 0); if (NULL == con) { printf("mysql_real_connect : %s\n", mysql_error(mysql)); return NULL; } return mysql; } int get_result(MYSQL *mysql) { char sql[64] = {0}; int ret, i, fields; MYSQL_RES *res; MYSQL_FIELD *f; //保存列结果(结构体) MYSQL_ROW row; //保存行结果(数组) sprintf(sql, "select * from stu;"); ret = mysql_query(mysql, "set names gbk"); if (ret != 0) { printf("mysql_query : %s\n", mysql_error(mysql)); return -3; } ret = mysql_query(mysql, sql); //查询结果 if (ret != 0) { printf("mysql_query : %s\n", mysql_error(mysql)); return -1; } res = mysql_store_result(mysql); //保存查询结果 if (NULL == res) { printf("mysql_store_result : %s\n", mysql_error(mysql)); return -2; } fields = mysql_num_fields(res); //获取列数 while (f = mysql_fetch_field(res)) //获取表头 { printf("%-12s", f->name); } printf("\n"); while (row = mysql_fetch_row(res)) { for (i = 0; i < fields; i++) { printf("%-12s", row[i]); } printf("\n"); } return 0; } int main() { MYSQL *mysql; int ret; mysql = init(); if (NULL == mysql) { exit(1); } printf("连接服务器成功!\n"); ret = get_result(mysql); //自定义函数 if (ret != 0) { exit(2); } getchar(); return 0; }
MYSQL数据库(二)——简单应用
猜你喜欢
转载自blog.csdn.net/cainiao000001/article/details/80794189
今日推荐
周排行