Compilare: user.cpp: In function ‘void Next()’: user.cpp:100:31: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread( r, 1, MAXR, f ); ^ user.cpp: In function ‘void Get(int&)’: user.cpp:92:5: warning: ‘c’ may be used uninitialized in this function [-Wmaybe-uninitialized] if ( c == '-' ) ^