Cod:
int a, b;
cin >> a >> b;
int n; cin >> n;
int r = 0;
cout << "0.";
while(n--){
r = a * 10;
cout << r / b;
a = r - b * (r / b);
}
cin >> a >> b;
int n; cin >> n;
int r = 0;
cout << "0.";
while(n--){
r = a * 10;
cout << r / b;
a = r - b * (r / b);
}