Compilare: user.cpp: In function ‘int main()’: user.cpp:11:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("and.in","r",stdin); ^ user.cpp:12:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("and.out","w", stdout); ^ user.cpp:13:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:20:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &x); ^ user.cpp:44:26: warning: iteration 99u invokes undefined behavior [-Waggressive-loop-optimizations] andp[i]=1; ^ user.cpp:43:26: note: containing loop for(int i=1; i<=100;i++) ^ user.cpp:34:21: warning: iteration 99u invokes undefined behavior [-Waggressive-loop-optimizations] if(viz[i]==andp[i] && andp[i]==1) ^ user.cpp:33:23: note: containing loop for(int i=1; i<=100; i++) ^ user.cpp:23:21: warning: iteration 99u invokes undefined behavior [-Waggressive-loop-optimizations] viz[i]=0; ^ user.cpp:22:23: note: containing loop for(int i=1; i<=100;i++) ^ user.cpp:15:18: warning: iteration 99u invokes undefined behavior [-Waggressive-loop-optimizations] andp[i]=1; ^ user.cpp:14:19: note: containing loop for(int i=1; i<=100;i++) ^