Compilare: user.cpp: In function ‘int main()’: user.cpp:155:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<path.size();i++) ^ user.cpp:128:13: warning: variable ‘volt2’ set but not used [-Wunused-but-set-variable] int volt2[g]; ^ user.cpp:123:34: warning: ‘y1’ may be used uninitialized in this function [-Wmaybe-uninitialized] out << x1 << " " << y1<< " " << dis-1; ^ user.cpp:123:21: warning: ‘x1’ may be used uninitialized in this function [-Wmaybe-uninitialized] out << x1 << " " << y1<< " " << dis-1; ^ user.cpp:119:24: warning: ‘a’ may be used uninitialized in this function [-Wmaybe-uninitialized] a=t2[a]; ^