control flags

#include <iostream>
using namespace std;
int main()
{
int sum = 0;
for(int i=1; i<=5; i++)
// i is only visible inside the block
{
int value;//value only visible inside the block
cout << "Value no. "<< i << " ? ";
cin >> value;
if(cin)
cout << " Consegui ler" ;
sum = sum + value;
}
return 0;
}