Compilare: user.cpp: In function ‘bool ch(int, int, point, point*, point, point)’: user.cpp:30:9: warning: unused variable ‘cnt’ [-Wunused-variable] int cnt; ^ user.cpp:31:11: warning: unused variable ‘st’ [-Wunused-variable] point st[255],st1[255],st2[255]; ^ user.cpp: In function ‘void build(point*, point*, char*)’: user.cpp:133:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^ user.cpp: In function ‘int main()’: user.cpp:146:12: warning: unused variable ‘n1’ [-Wunused-variable] {int i,j,n,n1=0,n2=0,ii,jj; ^ user.cpp:146:17: warning: unused variable ‘n2’ [-Wunused-variable] {int i,j,n,n1=0,n2=0,ii,jj; ^ user.cpp:146:22: warning: unused variable ‘ii’ [-Wunused-variable] {int i,j,n,n1=0,n2=0,ii,jj; ^ user.cpp:146:25: warning: unused variable ‘jj’ [-Wunused-variable] {int i,j,n,n1=0,n2=0,ii,jj; ^ user.cpp:148:6: warning: unused variable ‘c’ [-Wunused-variable] char c[255],bst[255]; ^ user.cpp:148:13: warning: unused variable ‘bst’ [-Wunused-variable] char c[255],bst[255]; ^ user.cpp:177:19: warning: ‘a2’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(fabs(a1-a2)<mini&&fabs(a1-a2)&&ok1&&ok2) ^ user.cpp:177:19: warning: ‘a1’ may be used uninitialized in this function [-Wmaybe-uninitialized]