Răspuns:
#include <iostream>
using namespace std;
int n, m, p, nr, suma;
int main()
{
cout<<"n=";
cin>>n;
// prima suma
suma=0;
for(m=1;m<=n;m++)
{
nr = (m*10) + (m+1); //formam 12, 23, 34, etc.
cout<<"nr="<<nr<<endl;
suma = suma+nr;
}
cout<<"suma este : "<<suma<<endl;
// a doua suma
suma=1;
nr = 1;
for(m=1;m<=n;m++)
{
p = nr;
nr = (p*10) + (m+1); //formam 12, 123, 1234, etc.
cout<<"nr="<<nr<<endl;
suma = suma+nr;
}
cout<<"suma este : "<<suma<<endl;
return 0;
}
Explicație:
