Linux下的数据库操作

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

#include <sqlite3.h>

int handle_result(void *para, int column_count, char **column_value, char **column_name)
{
    printf("para = %s\n",(char *)para);
    printf("column count = %d\n",column_count);

    int i;

    for(i = 0; i < column_count; i++)
    {
        printf("%s:%s ",column_name[i],column_value[i]);
    }

    printf("\n");

    return 0;
}

int main(int argc, char *argv[])
{
    if(argc != 2)
    {
        printf("Please input db file name!\n");
 exit(1);
    }

    int i;
    int ret;
    int id;
    char name[20];
    int age;
    char *errmsg;
  
    char sql[1024];

    sqlite3 *db;
   
    ret = sqlite3_open(argv[1],&db);

    if(ret != SQLITE_OK)
    {
        perror("sqlite open error!");
 exit(1);
    }
   
    sqlite3_exec(db,"create table student(id integer primary key,name text,age integer)",NULL,NULL,&errmsg);

    #if 0
    for(i = 0; i < 3; i++)
    {
        printf("Please input id:\n");
 scanf("%d",&id);
 printf("Please input name:\n");
 scanf("%s",name);
 printf("Please input age:\n");
 scanf("%d",&age);
       
 sprintf(sql,"insert into student(id,name,age) values(%d,'%s',%d)",id,name,age);
 printf("%s\n",sql);
 sqlite3_exec(db,sql,NULL,NULL,&errmsg);
    }
    #endif
   
    sqlite3_exec(db,"select * from student",handle_result,"hello world",&errmsg);

    sqlite3_close(db);

    return 0;
}