Compilare: user.cpp: In function ‘int main()’: user.cpp:63:13: warning: unused variable ‘mx’ [-Wunused-variable] int mx = 0; ^ user.cpp:64:13: warning: unused variable ‘mn’ [-Wunused-variable] int mn = v[pmax]; ^ user.cpp: In function ‘char gchar()’: user.cpp:21:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, buffer, 1, stdin); ^ user.cpp: In function ‘int main()’: user.cpp:48:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("risc2.in", "r", stdin); ^ user.cpp:49:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("risc2.out", "w", stdout); ^