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#include <stdio.h>
#include <windows.h>
#include <mysql.h>
#define host "localhost"
#define username "root"
#define password "123"
#define database "oa"
MYSQL *conn;
int main()
{
MYSQL_RES *res_set;
MYSQL_ROW row;
unsigned int i,ret;
FILE *fp;
MYSQL_FIELD *field;
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ID INT NOT NULL,
username VARCHAR(16) NOT NULL
);
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