Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:21:13: warning: unused variable ‘nod’ [-Wunused-variable] int p,v,nod; ^ user.cpp: In function ‘void citire()’: user.cpp:89:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d", &t); ^ user.cpp:92:30: 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:95:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d", &cost[i]); ^ user.cpp:99:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d", &a, &b); ^