#include <iostream>
int main() { int A=43,B=A/2,
C=B/2,x,y,i=B,j=-C;for(y=0;y<B;
j=(++y)-(C+C/8)) {for(x=0; x<A;i=
abs((++x)-B)+j){std::cout<<((i*i
/2+j*j<(C*C*2)/3)?"*":" ");}
std::cout<<std::endl
;}std::cin.get()
; }
effect: