A meghajtóprogram letöltéséhez látogassuk meg a következő oldalt:

• http://dev.mysql.com/downloads/connector/c/

Ha telepítő nélküli verziót választottuk 32-bites rendszerre (Windows (x86, 32-bit), ZIP), akkor egy ehhez hasonló állományt kapunk:

• mysql-connector-c-6.1.5-win32.zip

Csomagoljuk ki tetszőleges helyre. Például:

c:\mysql-connector-c-6.1.5-win32\

mysqleleres.c

#include <mysql.h>
 
main()
{
     MYSQL *sql;
     MYSQL_RES *res;
     MYSQL_ROW row;
     if (!(mysql_real_connect(sql, "localhost", "root", "titok", "dbname", 0, NULL, 0)))
     {
        fprintf(stderr, "Nem tudok csatlakozni a MySQL adatbázishoz (%s)", mysql_error(sql));
        exit(1);
     }
     if (mysql_query(sql,"insert into table (a) values (1)")!=0)
       fprintf(stderr, "Hiba! %s", mysql_error(sql));
 
     mysql_close(sql);
}

program01.c

#include <stdio.h>
#include <stdlib.h>
#include <mysql.h>
 
int main(int argc, char **argv)
{
	printf("Kezdes\n");
	MYSQL *conn;
    //~ MYSQL_RES *res;
    //~ MYSQL_ROW row;
 
    printf("%s\n", mysql_get_client_info());
    conn = mysql_init(NULL);	
 
	if (!(mysql_real_connect(conn, "192.168.5.5", "test", "titok", "test", 0, NULL, 0))) {
		fprintf(stderr, "Nem tudok csatlakozni a MySQL adatbázishoz (%s)", mysql_error(conn));
        exit(1);
     }    
 
     if (mysql_query(conn,"insert into Szemelyek (dolgozo) values ('Füles Bagoly')")!=0)
       fprintf(stderr, "Hiba! %s", mysql_error(conn));
 
     mysql_close(conn);
 
	return 0;
}

Makefile

CC = c:/MinGW/bin/gcc
RM = rm
 
MYSQLINC = -Ic:/mysql/mysqlConnectorC/include
MYSQLLIB = -Lc:/mysql/mysqlConnectorC/lib
 
 
STDINC = -Ic:/MinGW/include
STDLIB = -Lc:/MinGW/lib
 
TARGET = program01.exe
SRCS = program01.c
OBJS = program01.o
CFLAGS =  
LDFLAGS = -lmysql
LIBS = $(STDLIB) $(MYSQLLIB)
INCLUDES = $(STDINC) $(MYSQLINC)
 
 
%.o : %.c
	$(CC) -c $(CFLAGS) $(INCLUDES) -o $@ $<
 
 
$(TARGET): $(OBJS)
	$(CC) $(LDFLAGS) $(LIBS) -o $@ $^
 
 
clean:
	$(RM) -f $(TARGET) $(OBJS)

A libmysql.dll-t útvonalba kell helyezni. Nálam ez itt van:

c:\mysql\mysqlConnectorC\lib\

Settings -> Compiler -> 

Global compiler settings ikon
Search directories fül
Compiler alfül
Add gomb
Keressük ki: C:\mysql-connector-c-6.1.5-win32\include

Global compiler settings ikon
Search directories fül
Linker alfül
Add gomb
Keressük ki: C:\mysql-connector-c-6.1.5-win32\lib

Global compiler settings ikon
Other linker options:
Linker settings: -lmysql

Global compiler settings ikon
Linker libraries:
Add gomb
libmysql.dll kikeressük, hozzáadjuk

Teszteljük:

main.c

#include <stdio.h>
#include <mysql.h>
 
int main(){
    printf("%s\n", mysql_get_client_info());
    return 0;
}

A Path környezeti változóba vegyük fel a következőt:

C:\mysql-connector-c-6.1.5-win32\lib

Eredmény ehhez hasonló kell legyen:

6.1.5

program01.c

#include <stdio.h>
#include <mysql.h>
int main() {
	printf("%s\n", mysql_get_client_info());
	printf("teszt\n");
	return 0;
}

Makefile

TARGET = program01.exe
CC = "c:\Program Files (x86)\CodeBlocks\MinGW\bin\gcc"
CFLAGS = -Wall -g
LDFLAGS = -lmysql
SRCS = program01.c
OBJS = program01.o
 
MYSQLINCLUDE = -Ic:/mysql-connector-c-6.1.5-win32/include/
MYSQLLIB = -Lc:/mysql-connector-c-6.1.5-win32/lib/
 
STDINCLUDE = -I"c:/Program Files (x86)/CodeBlocks/MinGW/include/" 
STDLIB = -L"c:/Program Files (x86)/CodeBlocks/MinGW/lib/"
 
INCLUDES = ${STDINCLUDE} ${MYSQLINCLUDE}
LIBS = ${STDLIB} ${MYSQLLIB}
 
 
${TARGET}: ${OBJS}
	${CC} ${LDFLAGS} ${LIBS} -o ${TARGET} ${OBJS}
 
${OBJS}: ${SRCS}
	${CC} ${CFLAGS} ${INCLUDES} -c ${SRCS}
 
clean:
	rm ${OBJS} ${TARGET}

apt-get install libmysqlclient-dev

program01.c

#include <stdio.h>
#include <stdlib.h>
#include <mysql/mysql.h>
 
int main(int argc, char **argv) {
 
 
     MYSQL *sql;
     if (!(mysql_real_connect(sql, "localhost", "root", "titok", "dbname", 0, NULL, 0)))
     {
        fprintf(stderr, "Nem tudok csatlakozni a MySQL adatbázishoz (%s)", 
        mysql_error(sql));
        exit(1);
     }
     if (mysql_query(sql,"insert into table (a) values (1)")!=0)
       fprintf(stderr, "Hiba! %s", mysql_error(sql));
 
     mysql_close(sql);
 
	return 0;
}

Makefile

CC = gcc
LDFLAGS = -lmysqlclient
TARGET = program01
OBJECTS = program01.o
SOURCES = program01.c
HEADER =
 
 
$(TARGET): $(OBJECTS)
	$(CC) $(LDFLAGS) -o $(TARGET) $(OBJECTS)
 
 
$(OBJECTS): $(SOURCES)
	$(CC) -c -o $(OBJECTS) $(SOURCES)
 
 
clean:
	rm -f $(TARGET) $(OBJECTS);

program01.c

#include <stdio.h>
#include <stdlib.h>
#include <mysql/mysql.h>
 
int main(int argc, char **argv) {
 
	MYSQL *con = mysql_init(NULL);
	if (!(mysql_real_connect(con, "localhost", 
		"zoldUser", "titok", "zoldZrt", 0, NULL, 0)))  {
		fprintf(stderr, "Nem tudok csatlakozni a MySQL adatbázishoz (%s)",
		 mysql_error(con));
		exit(1);
	}
	if (!mysql_set_character_set(con, "utf8")) {
		printf("A kliens új karakterkódolása: %s\n",
		mysql_character_set_name(con));
	}
	if (mysql_query(con,"select nev, fizetes from szemelyek")!=0)
		fprintf(stderr, "Hiba! %s", mysql_error(con));
 
	MYSQL_RES *result = mysql_store_result(con);
 
	if (result == NULL) {
		fprintf(stderr, "%s\n", mysql_error(con));
		mysql_close(con);
		exit(1);      
	}
 
	int num_fields = mysql_num_fields(result);
 
	MYSQL_ROW row;
 
	while ((row = mysql_fetch_row(result))) {
		int i;
		for(i = 0; i < num_fields; i++) { 
			printf("%s ", row[i] ? row[i] : "NULL"); 
		} 
		printf("\n"); 
	}
 
	mysql_free_result(result); 
	mysql_close(con);
 
	return 0;
}

• http://dev.mysql.com/doc/refman/5.5/en/c-api-functions.html (C API)
• http://zetcode.com/db/mysqlc/