Compilare: user.cpp: In function ‘void sterge_muchie(unsigned int, unsigned int)’: user.cpp:24:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ( arc [ y ] [ i ] == x ) ^ user.cpp: In function ‘bool euler(int)’: user.cpp:51:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ( top_node == node) ^ user.cpp: In function ‘int main()’: user.cpp:134:24: warning: unused variable ‘i’ [-Wunused-variable] unsigned int x,y ,m,i; ^ user.cpp: In function ‘bool euler(int)’: user.cpp:73:1: warning: control reaches end of non-void function [-Wreturn-type] } ^