1 #include "stdio.h" 2 #include "math.h" 3 int main(void) 4 { 5 double y; 6 int x,m; 7 for(y=10;y>=-10;y--) 8 { 9 m=2.5*sqrt(100-y*y); 10 for(x=1;x<30-m;x++) 11 printf(" "); 12 printf("* "); 13 } 14 return 0; 15 }