Compilare: user.cpp: In function ‘void Get_Back(int, int)’: user.cpp:25:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Graph[node].size();i++) ^ user.cpp: In function ‘void Get_Low(int)’: user.cpp:35:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Back[node].size();i++) ^ user.cpp: In function ‘void Mark_Edges(int, int)’: user.cpp:47:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<T[node].size();i++) ^ user.cpp: In function ‘void Get_Comp(int, int)’: user.cpp:64:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<T[node].size();i++) ^ user.cpp: In function ‘void Get_BCC(int)’: user.cpp:70:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<T[node].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:106:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<Out[i].size();j++) ^ user.cpp:83:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d%d",&N,&M); ^ user.cpp:87:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d%d",&X,&Y); ^