Compilare: user.cpp: In function ‘int main()’: user.cpp:2:150: warning: second operand of conditional expression has no effect [-Wunused-value] using namespace std;ifstream f("fact.in");ofstream g("fact.out");int p,m,s,n;int main(){f>>p;for(n=4*p;s<p;n++)for(m=n,s=0;m;m/=5,s+=m);g<<s-p?-1:p?n-1:1;} ^ user.cpp:2:154: warning: third operand of conditional expression has no effect [-Wunused-value] using namespace std;ifstream f("fact.in");ofstream g("fact.out");int p,m,s,n;int main(){f>>p;for(n=4*p;s<p;n++)for(m=n,s=0;m;m/=5,s+=m);g<<s-p?-1:p?n-1:1;} ^ user.cpp:2:154: warning: third operand of conditional expression has no effect [-Wunused-value]