Răspuns:
Problema 1.
#include <iostream>
using namespace std;
int main() {
int n;
cin>>n;
for(int i=1;i<=n;i++){
if(i%2!=0){
cout<<i<<" ";
}
}
}
Problema 2.
#include <iostream>
using namespace std;
int main() {
int n,p=1;
cin>>n;
for(int i=1;i<=n;i++){
p=p*i;
}
cout<<p;
}