Compilare: user.cpp: In function ‘void solve()’: user.cpp:34:23: warning: unused variable ‘vf’ [-Wunused-variable] int area = 0, i = 1, vf = 0; ^ user.cpp: In function ‘char getch()’: user.cpp:15:39: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread( bufferr, 1010, 1, fi ); ^