Compilare: user.cpp: In function ‘int main()’: user.cpp:9:9: warning: unused variable ‘n’ [-Wunused-variable] int n,x,cmmdc,a,b,r; ^ user.cpp:9:11: warning: unused variable ‘x’ [-Wunused-variable] int n,x,cmmdc,a,b,r; ^ user.cpp:24:26: warning: ‘cmmdc’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d\n",cmmdc); ^