Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:24:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < L1[ node ].size(); i++) { ^ user.cpp: In function ‘void DFSR(int)’: user.cpp:41:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < L2[ node ].size(); i++) { ^ user.cpp: In function ‘void writeComponents()’: user.cpp:99:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < Comp[ i ].size(); j++ ) { ^ user.cpp: In function ‘void readData()’: user.cpp:57:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d", &nodes, &edges); ^ user.cpp:61:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d", &x, &y); ^