Compilare: user.cpp: In function ‘void read(int&)’: user.cpp:16:75: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(cursor == bufSize) cursor = 0, fread(buffer, 1, bufSize, stdin); ^ user.cpp:23:75: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(cursor == bufSize) cursor = 0, fread(buffer, 1, bufSize, stdin); ^ user.cpp: In function ‘int main()’: user.cpp:71:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("trenuri.in", "r", stdin); ^ user.cpp:72:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("trenuri.out", "w", stdout); ^ user.cpp:74:49: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] cursor = 0, fread(buffer, 1, bufSize, stdin); ^