Review Questions

1:Consider the following two code fragments for counting spaces and newlines: 
// Version 1
while (cin.get(ch))    // quit on eof
{
      if (ch == ' ')
             spaces++;
      if (ch == '\n')
            newlines++;
}
// Version 2
while (cin.get(ch))    // quit on eof
{
      if (ch == ' ')
            spaces++;
      else if (ch == '\n')
            newlines++;
}

What advantages, if any, does the second form have over the first?

2:In Listing 6.2, what is the effect of replacing ++ch with ch+1?
3:Consider carefully the following program: 
#include <iostream>
using namespace std;
int main()
{
    char ch;
    int ct1, ct2;
    ct1 = ct2 = 0;
    while ((ch = cin.get()) != '$')
    {
        cout << ch;
        ct1++;
        if (ch = '$')
            ct2++;
        cout << ch;
    }
    cout <<"ct1 = " << ct1 << ", ct2 = " << ct2 << "\n";
    return 0;
}

Suppose we provide ...

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