Review Questions

1.	What is a stream? What kinds of streams are there?
2.	Give one reason to use an ostrstream.
3.	What is the main difference between getline and the >> operator?
4.	What is the type of each expression? 3.14 'D' "d" 6 6.2f "something stringey" false
5.	In Example 1.23, identify the type and value of each "thing": Example 1.23. src/types/types.cpp #include int main() { using namespace std; int i = 5; int j=6; int *p = &i; <-- 1 int& r=i; int& rpr=(*p); i = 10; p = &j; <-- 2 rpr = 7; <-- 3 r = 8; <-- 4 cout << "i=" << i << " j=" << j << endl; <-- 5 }   (1)*p: ______ (2)*p: ________ (3)*p: ________ (4)rpr: ________ (5)i: ________ j: ________
6.	What is the difference between a pointer and a reference?
7.	Why does main(int argc, char* argv[]) sometimes have parameters? What are they used for?