Compilare: user.cpp: In function ‘int main()’: user.cpp:30:23: warning: unused variable ‘r’ [-Wunused-variable] int m,n,i,j,e=0,a,r,maxim=0,poz,produs=1; ^ user.cpp:30:37: warning: unused variable ‘produs’ [-Wunused-variable] int m,n,i,j,e=0,a,r,maxim=0,poz,produs=1; ^ user.cpp:31:12: warning: unused variable ‘c’ [-Wunused-variable] double c,start,stop; ^ user.cpp:31:14: warning: variable ‘start’ set but not used [-Wunused-but-set-variable] double c,start,stop; ^ user.cpp:31:20: warning: unused variable ‘stop’ [-Wunused-variable] double c,start,stop; ^ user.cpp:67:23: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] a=verificare(poz,m); ^