Compilare: user.cpp: In function ‘double DistV(Pct, Pct, Pct)’: user.cpp:73:18: warning: unused variable ‘xi’ [-Wunused-variable] double a,b,c,xi,yi; ^ user.cpp: In function ‘double DistH(Pct, Pct, Pct)’: user.cpp:87:25: warning: unused variable ‘yi’ [-Wunused-variable] double a,b,c,xi,yi; ^ user.cpp: In function ‘void Graf()’: user.cpp:133:13: warning: unused variable ‘k’ [-Wunused-variable] int i,j,k; ^ user.cpp: In function ‘void C3()’: user.cpp:168:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,r1,r2; ^ user.cpp: In function ‘void Read()’: user.cpp:187:11: warning: unused variable ‘x’ [-Wunused-variable] int i,x,y,z; ^ user.cpp:187:13: warning: unused variable ‘y’ [-Wunused-variable] int i,x,y,z; ^ user.cpp:187:15: warning: unused variable ‘z’ [-Wunused-variable] int i,x,y,z; ^