Compilare: user.cpp: In function ‘void citeste(int&)’: user.cpp:19:50: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread( buff, 1, sizeof( buff ), fin ); ^ user.cpp:29:50: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread( buff, 1, sizeof( buff ), fin ); ^ user.cpp: In function ‘int main()’: user.cpp:37:42: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread( buff, 1, sizeof( buff ), fin ); ^