Compilare: user.cpp: In function ‘int main()’: user.cpp:13:37: warning: operation on ‘cnt’ may be undefined [-Wsequence-point] v[++cnt]=cnt*(cnt+1)*(cnt+2); ^ user.cpp:13:37: warning: operation on ‘cnt’ may be undefined [-Wsequence-point] user.cpp:13:37: warning: operation on ‘cnt’ may be undefined [-Wsequence-point] user.cpp:8:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dartz.in","r",stdin); ^ user.cpp:9:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dartz.out","w",stdout); ^ user.cpp:10:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&S); ^