Compilare: user.cpp: In function ‘i64 computeConex(int)’: user.cpp:115:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < biconex[ index ].size(); j++) ^ user.cpp:124:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < biconex[ index ].size(); j++) ^ user.cpp: In function ‘char getChar()’: user.cpp:17:44: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] pos = 0, fread( buf, 1, buff, fin ); ^