#include <iostream>         /// cin, cout
 
using namespace std;
 
 
void read()
{
    char buf[80];
 
    cout << "Please enter at least 5 chars: ";
 
    cin.read(buf, 5);
 
    if (cin)
    {
        cout << "cin.read() successfully read "
             << cin.gcount() << " characters: ";
 
        /// Append the null terminator.
///     buf[5] = '0';
 
        cout << buf << endl;
    }
    else
        cout << "cin.read() was unsuccessful" << endl;
}
 
 
int main()
{
    for (int i = 0; i < 4; i++)
       read();
}

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

YWJjZGUKYWJjZAphYmNkZWY=

abcde
abcd
abcdef