Compilare: user.cpp: In function ‘int main()’: user.cpp:22:28: warning: variable ‘sum’ set but not used [-Wunused-but-set-variable] int n,i,j,k,m,ok,nr,me,sum,L,C; ^ user.cpp:22:32: warning: unused variable ‘L’ [-Wunused-variable] int n,i,j,k,m,ok,nr,me,sum,L,C; ^ user.cpp:22:34: warning: unused variable ‘C’ [-Wunused-variable] int n,i,j,k,m,ok,nr,me,sum,L,C; ^