Compilare: user.cpp: In function ‘int main()’: user.cpp:7:15: warning: unused variable ‘ok’ [-Wunused-variable] int n,i,j,ok=0,m=-101,sc,i1; ^ user.cpp:8:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sotron.in","r",stdin); ^ user.cpp:9:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sotron.out","w",stdout); ^