Compilare: user.cpp: In function ‘int main()’: user.cpp:8:15: warning: unused variable ‘i’ [-Wunused-variable] int n,m,c,i,poz,val; ^ user.cpp:8:21: warning: variable ‘val’ set but not used [-Wunused-but-set-variable] int n,m,c,i,poz,val; ^ user.cpp:20:11: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<poz; ^