Question

For some reason I don’t know, the program crashes when it tries to execute

mysql_query(mysql,"CREATE TABLE writers(name VARCHAR(25))"); 

Though the query gets executed successfully and the table does get created , windows complain that the program stopped responding but it hasn’t.

Here’s my main function.

int main()
{
    MYSQL* mysql;
    mysql_init(mysql);
    mysql_real_connect(mysql,"localhost","root","xxxx","test",0,NULL,0);
    mysql_query(mysql,"CREATE TABLE writers(name VARCHAR(25))"); // 'Program stops responding' without actually crashing.
    mysql_close(mysql);
    getchar();
    return 0;
}

Answer 1

Your use of the API is wrong, you’re passing a dangling pointer to mysql_init and not checking a single return value. Don’t do that.

You can transform your code like this:

MYSQL* mysql = mysql_init(NULL);
if (!mysql) {
  // HANDLE THE ERROR
}
if (!mysql_real_connect(mysql,"localhost","root","xxxx","test",0,NULL,0)) {
  // HANDLE THE ERROR
}
if (mysql_query(mysql,"CREATE TABLE writers(name VARCHAR(25))")) {
  // HANDLE THE ERROR
}
mysql_close(mysql); // No error checking here, that's ok,
                    // it doesn't report errors
                    // But just for this call. All others => check.
getchar();
return 0;