Răspuns :
Sper sa intelegi :)
#include <iostream>
using namespace std;
int main()
{ int a,b,i,k=0;
cin>>a;
cin>>b;
for(i=a;i<b;i++)
if(i%10==0)
k++;
cout<<k;
return 0;}
#include <iostream>
using namespace std;
int main()
{ int a,b,i,k=0;
cin>>a;
cin>>b;
for(i=a;i<b;i++)
if(i%10==0)
k++;
cout<<k;
return 0;}