Compilare: user.cpp: In function ‘int main()’: user.cpp:10:27: warning: unused variable ‘k’ [-Wunused-variable] int N,M,x,y,z,i,j,gas,k,xult,yult,zult; ^ user.cpp:10:39: warning: variable ‘zult’ set but not used [-Wunused-but-set-variable] int N,M,x,y,z,i,j,gas,k,xult,yult,zult; ^ user.cpp:10:34: warning: ‘yult’ may be used uninitialized in this function [-Wmaybe-uninitialized] int N,M,x,y,z,i,j,gas,k,xult,yult,zult; ^ user.cpp:10:29: warning: ‘xult’ may be used uninitialized in this function [-Wmaybe-uninitialized] int N,M,x,y,z,i,j,gas,k,xult,yult,zult; ^