Compilare: user.cpp: In function ‘int main()’: user.cpp:55:9: warning: unused variable ‘a’ [-Wunused-variable] int a,i,j,ind=1,maxim1=-99999,maxim2=-99999,xi,xj,k,r; ^ user.cpp:55:35: warning: unused variable ‘maxim2’ [-Wunused-variable] int a,i,j,ind=1,maxim1=-99999,maxim2=-99999,xi,xj,k,r; ^ user.cpp:55:55: warning: unused variable ‘k’ [-Wunused-variable] int a,i,j,ind=1,maxim1=-99999,maxim2=-99999,xi,xj,k,r; ^ user.cpp:55:57: warning: unused variable ‘r’ [-Wunused-variable] int a,i,j,ind=1,maxim1=-99999,maxim2=-99999,xi,xj,k,r; ^ user.cpp:102:15: warning: ‘xi’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<xi<<" "<<xj<<"\n"<<color<<"\n"; ^ user.cpp:102:24: warning: ‘xj’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<xi<<" "<<xj<<"\n"<<color<<"\n"; ^