Compilare: user.cpp: In function ‘int main()’: user.cpp:14:79: warning: variable ‘mp3’ set but not used [-Wunused-but-set-variable] int s=0,n,i,nr1=0,nr2=0,nr3=0,nr12=0,nr13=0,nr21=0,nr23=0,nr31=0,nr32=0,mp2=0,mp3=0; ^ user.cpp:56:10: warning: unused variable ‘rez’ [-Wunused-variable] int s2=0,rez,s3=0; ^ user.cpp:56:14: warning: unused variable ‘s3’ [-Wunused-variable] int s2=0,rez,s3=0; ^