linux_connect_mysql

原文来自 https://www.cnblogs.com/lywy510/p/3615710.html

 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

 #include <mysql/mysql.h>

 MYSQL *g_conn;
 MYSQL_RES *g_res;
 MYSQL_ROW g_row;

 #define MAX_BUF_SIZE 1024

 const char *g_host_name = "localhost";
 const char *g_user_name = "root";
 const char *g_password = "Ll123456..";
 const char *g_db_name = "c_test";
 const unsigned int g_db_port = ;

 void print_mysql_error(const char *msg) {
     if (msg)
         printf("%s:%s\n",msg,mysql_error(g_conn));
     else
         puts(mysql_error(g_conn));
 }

 int executesql(const char *sql) {
     if (mysql_real_query(g_conn,sql,strlen(sql)))
         return -;

     return ;
 }

 int init_mysql() {
     g_conn = mysql_init(NULL);
     if (!mysql_real_connect(g_conn,g_host_name,g_user_name,g_password,g_db_name,g_db_port,NULL,))
         return -;

     return ;
 }

 int main()
 {
     printf("hello world\n");
     if (init_mysql())
         print_mysql_error(NULL);
     char sql[MAX_BUF_SIZE];
     if (executesql(sql))
         print_mysql_error(NULL);
     if (executesql("select * from user;"))
         print_mysql_error(NULL);

     g_res = mysql_store_result(g_conn);
     int iNum_rows = mysql_num_rows(g_res);
     int iNum_fields = mysql_num_fields(g_res);
     printf("line = %d\t constent = %d\n", iNum_rows, iNum_fields);
     puts("id\tname\n");

     while ((g_row=mysql_fetch_row(g_res)))
         printf("%s\t%s\n", g_row[], g_row[]);

     mysql_free_result(g_res);
     mysql_close(g_conn);
     return ;
 }

编译命令

mysql 库文件自己找一下, 一般会使 mysql-dev.....

希望对你有用