[neo_gis]

    
int i = 15;

char *msg;
    
sprintf(msg, "i = %d", i);

When i try this on devC++ as console app it works but on my server plugin it crashes !

anyhelp on this one ?

[pRED*]

I'd suggest doing some introductory c++ work before jumping into writing a server plugin.

char *msg is only creating a pointer to a string, not a buffer to hold an actual string. And then as a bonus, it's uninitialized.

Like a handle without a cup. And you're now pouring coffee on the floor.

[neo_gis]

yh i figured it out later after some pain . finally got it to work using vsnprintf and va_list .