static twoints * main_source(twoints * data){data=(twoints *)calloc(100, sizeof(twoints));return data;}void main(){twoints * data;data=NULL;data=main_source(data);delete data;}
static twoints * main_source(twoints * data){data=(twoints *)calloc(100, sizeof(twoints));return data;}static void main(){twoints * data;data=NULL;data=main_source(data);free(data);}