void main_source(twointsclass * &data);void main(){twointsclass * data;data=NULL;main_source(data);delete data;}void main_source(twointsclass * &data){data=NULL;data=(twointsclass *)realloc(data, 100*sizeof(twointsclass));}
static void main(){twointsclass * data;data=NULL;main_source(data);free(data);}void main_source(twointsclass * &data){data=NULL;data=(twointsclass *)realloc(data, 100*sizeof(twointsclass));}