Răspuns 1:
#include <iostream>
using namespace std;
int main()
{
int a, b, i, nr = 0;
cin >> a >> b;
for(i = a; i <= b; i++)
if(i % 2 == 0)
nr++;
cout << nr;
return 0;
}
Răspuns 2:
#include <iostream>
using namespace std;
int main()
{
int nr, i, S = 0;
cin >> nr;
for(i = 1; i <= nr; i++)
S = S + i;
cout << S;
return 0;
}