Compilare: user.cpp: In function ‘void bfs(int)’: user.cpp:24:33: warning: variable ‘tnou’ set but not used [-Wunused-but-set-variable] int l,c,type,cost,lnou,cnou,tnou; ^~~~ user.cpp: In function ‘unsigned int getint()’: user.cpp:74:40: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf,maxb,1,fin),ptr=0; ^ user.cpp:79:40: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf,maxb,1,fin),ptr=0; ^