Answer / pramod badiger

/* C ++ program that connects to a MySQL server and checks if the InnoDB plug-in is installed on it. If so, your program should print the total number of disk writes by MySQL*/
#include <mysql.h> /*provides C client library to write programs for MySQL*/
#include <stdio.h> /*standard input/output header*/
#include<plugin.h> /* Is used with mysql storage engines like InnoDB plugin*/


int main()
{
MYSQL *conn; /* pointer to connection handler */
MYSQL_RES *res; /*Variable for storing db results*/
MYSQL_ROW row; /*variable for storing the single row of db*/

char *server_name = "localhost"; /* server host */
char *user_name = "root"; /* username (default=login name) */
char *password = "2ba07is045"; /* your login password*/
char *database_name = "mysql"; /*database name*/

conn = mysql_init(NULL); /* initialize connection handler */

/* CONNECTION TO MySQL SERVER */

if (mysql_real_connect(conn, server_name, user_name, password, database_name, 0, NULL,
0)==NULL)
{
/*Connection Failed*/
fprintf (stderr, "mysql_real_connect() failed\n");
/*close the connection*/
mysql_close (conn);
exit (1);

}
/*checking wheather InnoDB plug-in is installed or what */
if (mysql_query(conn, "select *from information_schema.plugins where
plugin_name=’mysql_plugin’ ")!==NULL) /*fuction returns zero if the statement was successful, Nonzero if an error occurred*/
{
printf(“InnoDB plug –in is not installed\n”);
exit(1);
}

/*After invoking mysql_query() or mysql_real_query(), we must call mysql_store_result() or mysql_use_result() for every statement that successfully produces a result set*/

res = mysql_use_result(conn);/* returns MYSQL_RES structure otherwise NULL if an error
occurred*/
printf("Information of installed InnoDB plug-in…………….\n");
/*Prints Plug-in type,name,author,version etc*/

while ((row = mysql_fetch_row(res)) != NULL)
printf("%s \n", row[0]);
mysql_free_result(res);

/* send SQL query SHOW TABLES to list the non-TEMPORARY tables in a given database */

if (mysql_query(conn, "show tables")!=NULL)
/*returns zero if the statement was successful. Nonzero if an error occurred*/
{
fprintf(stderr, "%s\n", mysql_error(conn));
exit(1);
}

res = mysql_use_result(conn);/* returns MYSQL_RES structure otherwise NULL if an error
occurred*
/* Prints tables name in the database */
printf("MySQL Tables in mysql database:\n");
while ((row = mysql_fetch_row(res)) != NULL)
printf("%s \n", row[0]);
mysql_free_result(res);

/*Number of Disk writes By the MySQL*/

if (mysql_query(conn, "SHOW STATUS LIKE 'key_writes%'"))
/*returns zero if the statement was successful. Nonzero if an error occurred*/
{
fprintf(stderr, "%s\n", mysql_error(conn));
exit(1);
}

res = mysql_use_result(conn); /*stores key writes*/
row = mysql_fetch_row(res); /*fetching the result*/
printf(“No of Disk writes\n”)
printf("%s ", row[0]); /*Displaying the No of Disk writes By MySQL*/

mysql_close(conn); /*close the connection*/
}

Answer / bhagya

/* Simple C program that connects to MySQL Database server*/
#include <mysql.h>
#include <stdio.h>

main() {
MYSQL *conn;
MYSQL_RES *res;
MYSQL_ROW row;

char *server = "localhost";
char *user = "root";
char *password = "PASSWORD"; /* set me first */
char *database = "mysql";

conn = mysql_init(NULL);

/* Connect to database */
if (!mysql_real_connect(conn, server,
user, password, database, 0, NULL, 0)) {
fprintf(stderr, "%s\n", mysql_error(conn));
exit(1);
}

/* send SQL query */
if (mysql_query(conn, "show tables")) {
fprintf(stderr, "%s\n", mysql_error(conn));
exit(1);
}

res = mysql_use_result(conn);

/* output table name */
printf("MySQL Tables in mysql database:\n");
while ((row = mysql_fetch_row(res)) != NULL)
printf("%s \n", row[0]);

/* close connection */
mysql_free_result(res);
mysql_close(conn);
}

Answer / raja bhar

#include <mysql.h>
#include <stdio.h>

main() {
MYSQL *conn;
MYSQL_RES *res;
MYSQL_ROW row;

char *server = "localhost";
char *user = "root";
char *password = "PASSWORD"; /* set me first */
char *database = "mysql";

conn = mysql_init(NULL);

/* Connect to database */
if (!mysql_real_connect(conn, server,
user, password, database, 0, NULL, 0)) {
fprintf(stderr, "%s\n", mysql_error(conn));
exit(1);
}

/* send SQL query */
if (mysql_query(conn, "show tables")) {
fprintf(stderr, "%s\n", mysql_error(conn));
exit(1);
}

res = mysql_use_result(conn);

/* output table name */
printf("MySQL Tables in mysql database:\n");
while ((row = mysql_fetch_row(res)) != NULL)
printf("%s \n", row[0]);

/* close connection */
mysql_free_result(res);
mysql_close(conn);
}

Answer / susmita

Actually it is not answer.I have a question.how can we run the C program connecting to the MYSQL server?

What are destructors?

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Define anonymous class.

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4 Answers   Quark,

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A prime number is a number which is divisible only by itself and 1. Examples of the first few primes are 2, 3, 5, 7, 11. Consider writing a program which can generate prime numbers for you. Your program should read in and set a maximum prime to generate and a minimum number to start with when looking for primes. This program should be able to perform the following tasks: 1. Read the maximum number from user (keyboard input) to look for primes. The program should not return any primes greater than this number. 2. Read the minimum number from user (keyboard input) to look for primes. The program should not return any primes less than this number. 3. Generate and print out every prime number between the maximum prime and minimum number specified by the user.

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what is the use of templates?

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what are the iterator and generic algorithms.

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