Compilare: user.cpp: In function ‘void read()’: user.cpp:17:9: warning: unused variable ‘bile_negre’ [-Wunused-variable] int bile_negre = N - M; ^ user.cpp: In function ‘bool color(int, int)’: user.cpp:46:15: warning: statement has no effect [-Wunused-value] else false; ^ user.cpp: In function ‘void bfs()’: user.cpp:85:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i ++){ ^ user.cpp:79:9: warning: unused variable ‘sameColor’ [-Wunused-variable] int sameColor; ^ user.cpp: In function ‘void read()’: user.cpp:16:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d", &N, &M, &K); ^ user.cpp:19:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &bileAlbe[i]); ^ user.cpp:26:48: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &matCosturi[i][j]); ^ user.cpp: In function ‘bool color(int, int)’: user.cpp:47:1: warning: control reaches end of non-void function [-Wreturn-type] } ^