Compilare: user.cpp: In function ‘void solve()’: user.cpp:45:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (x > v[n]) ^ user.cpp:50:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (v[j] == x) ^ user.cpp:59:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (v[j] > x) ^ user.cpp: In function ‘void read()’: user.cpp:15:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:18:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^