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?

  1. 3.14

  2. 'D'

  3. "d"

  4. 6

  5. 6.2f

  6. "something stringey"

  7. 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?

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