Compilare: user.cpp: In function ‘int main()’: user.cpp:17:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(n!=2) ^ user.cpp:8:15: warning: variable ‘numar’ set but not used [-Wunused-but-set-variable] int a,b,r,numar,n,prim; ^ user.cpp:8:23: warning: variable ‘prim’ set but not used [-Wunused-but-set-variable] int a,b,r,numar,n,prim; ^ user.cpp:17:5: warning: ‘n’ is used uninitialized in this function [-Wuninitialized] if(n!=2) ^