char * main_source(char * data);void main(){char * data;data=NULL;data=main_source(data);printf("%c\n", *data);}char * main_source(char * data){data=new char;delete data;return data;}
static void main(){char * data;data=NULL;data=main_source(data);printf("%c\n", *data);}char * main_source(char * data){data=new char;return data;}