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:35:22: warning: unused variable ‘i’ [-Wunused-variable] unsigned int i, top_node , sol ; ^ user.cpp:35:36: warning: unused variable ‘sol’ [-Wunused-variable] unsigned int i, top_node , sol ; ^ user.cpp:56:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:117:24: warning: unused variable ‘i’ [-Wunused-variable] unsigned int x,y ,m,i; ^