Name: ____________________________________________________ Alpha: _____________ Section: ________

Describe help received: _________________________________________________________________

See the bottom for how to submit your work.

Due: Before 0800 on next class day

  1. (10 pts) Read today's lecture notes. Honestly declare how you read the notes.
    1. (10 pts) I read the notes carefully. I have a good understanding of the topics therein.
    2. (10 pts) I read the notes carefully, but I don't really understand the following points well:
    3. (0 pts) I didn't read the notes carefully.
  2. [10pts] Provide the type of each expresssion. Write ERROR if the expression is illegal. 
    
int x = 1;
int* px = &x;
char c = 'a';
char* pc = &c;
string s = "hello";
    		 
    expression type expression type
    &x *x
    px &px
    *px *s
    pc *pc
    *c &c
  3. [10pts] Consider the following program: 
    
#include <iostream>
#include <string>
using namespace std;

int main()
{
  int a = 10, b = 7;

  // the first cout-statement
  cout << "&a=" << &a << ", &b=" << &b << endl;  

  int* p;
  uint64_t addr;          
  cin >> hex >> addr;     
  p = (int*) addr;        

  int n;
  cin >> n;
  *p = n;

  // the second cout-statement
  cout << "a=" << a << ", b=" << b << endl; 
  return 0;
}
    		  Suppose the program output was as follows: 
    &a=0x7ffff83497e0, &b=0x7ffff83497e4
a=10, b=20
    1. What was the input from the user?

    2. Give a simple diagram (i.e., with three boxes each for a, b, p) in this situation, when the program control is at the end of main.

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