Compilare: user.cpp: In function ‘int read_int()’: user.cpp:11:34: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf, 1, MAX, stdin); ^ user.cpp:16:47: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(poz==MAX){fread(buf, 1, MAX, stdin); poz = 0;} ^ user.cpp:21:47: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(poz==MAX){fread(buf, 1, MAX, stdin); poz = 0;} ^ user.cpp: In function ‘int main()’: user.cpp:37:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("easychoice.in", "r", stdin); ^ user.cpp:38:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("easychoice.out", "w", stdout); ^