Compilare: user.cpp: In function ‘void euler(int)’: user.cpp:42:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (A[*i] == nod) euler(B[*i]); else euler(A[*i]); ^ user.cpp: In function ‘void dfs(int)’: user.cpp:60:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (A[muchie] == nod) ^ user.cpp: In function ‘void read()’: user.cpp:23:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &n, &m); ^ user.cpp:26:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &x, &y); ^