Compilare: user.cpp: In function ‘int main()’: user.cpp:9:6: warning: statement has no effect [-Wunused-value] i>>n; ^ user.cpp:12:10: warning: statement has no effect [-Wunused-value] i>>a; ^ user.cpp:13:10: warning: statement has no effect [-Wunused-value] i>>b; ^ user.cpp:10:5: warning: ‘n’ is used uninitialized in this function [-Wuninitialized] for(i=1; i<=n; i++) ^ user.cpp:16:18: warning: ‘b’ may be used uninitialized in this function [-Wmaybe-uninitialized] r=a%b; ^ user.cpp:16:18: warning: ‘a’ may be used uninitialized in this function [-Wmaybe-uninitialized]