XXXX XXXX (void){ cout<<"### XXXXXXXXXX by Yours Truly.~~~~~~~\n";
XXXX&XX;&XX;"~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n"&XX;XXXX;
float XXX; XX{ XXXX<<"XXXXX radius of circle: "; cin>>rad; XXXX &XX;&XX;"Area is "&XX;&XX;circarea(XXX); XXXX&XX;&XX;"\n\n !XXXXX c to XXXXXXXX or any XXX XX exit."<&XX;endl<&XX;endl; }while(getch()=='c');}
XXXXX XXXXXXXX(XXXXX radius) { XXXXXX 3.XXXXXX*radius*XXXXXX;}