Compilare: user.cpp: In member function ‘bool Buffer::isDigit(char)’: user.cpp:35:22: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] return c >= '0' & c <= '9'; ^ user.cpp: In function ‘int main()’: user.cpp:57:35: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings] Buffer cin("kino.in",1024*1024); ^ user.cpp:73:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<e[i].size();j++){ ^ user.cpp:97:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<et.size();j++){ ^ user.cpp:101:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j+1<et.size()) ^ user.cpp:104:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j+1==et.size()) break; ^ user.cpp:58:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("kino.out","w",stdout); ^ user.cpp: In constructor ‘Buffer::Buffer(char*, long int)’: user.cpp:15:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(fileName,"r",stdin); ^ user.cpp: In member function ‘void Buffer::reFill()’: user.cpp:38:43: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(&Buff[0],1,maxBuf,stdin); pos = 0; ^