Compilare: user.cpp: In function ‘int main()’: user.cpp:24:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, x, y, poz; ^ user.cpp:24:15: warning: unused variable ‘x’ [-Wunused-variable] int i, j, x, y, poz; ^ user.cpp:24:18: warning: unused variable ‘y’ [-Wunused-variable] int i, j, x, y, poz; ^ user.cpp:21:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("schi.in","r",stdin); ^ user.cpp:22:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("schi.out","w",stdout); ^ user.cpp:26:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:29:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[ i ]); ^