Compilare: user.cpp: In function ‘int main()’: user.cpp:14:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=b;i++) ~^~~ user.cpp:17:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=b;i++) ~^~~ user.cpp:18:36: warning: statement has no effect [-Wunused-value] if(x%i==0) {a=b+i;c=b+x/i;2;v[0].pb(a);v[0].pb(c);}} ^