void main_source(twoints * &data);void main(){twoints * data;data=NULL;main_source(data);delete [] data;}void main_source(twoints * &data){data=(twoints *)calloc(100, sizeof(twoints));}
static void main(){twoints * data;data=NULL;main_source(data);delete [] data;}void main_source(twoints * &data){data=new twoints[100];}