Compilare: user.cpp: In function ‘int main()’: user.cpp:86:13: warning: unused variable ‘st’ [-Wunused-variable] int st, dr; ^ user.cpp:86:17: warning: unused variable ‘dr’ [-Wunused-variable] int st, dr; ^ user.cpp:57:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "cerc5.in", "r", stdin ); ^ user.cpp:58:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "cerc5.out", "w", stdout ); ^ user.cpp:60:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d%d%d", &cer, &n, &k ); ^ user.cpp:62:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d", &v[i] ); ^