HW05

Name: ____________________________________________________ Alpha: ________________________

Describe help received: _____________________________________________________________________

See the bottom for how to submit your work.

[10 pts] We would like you to self-test how much you retained from the lecture. Write the correct solution to the Practice Problem of "Area Calculation". Debug your code until it runs correctly. Circle below how you wrote your code.
1. (10 pts) I was able to write the code without referring to anything.
2. (10 pts) I had to look at the notes, but still I was able to write the code without looking at the solution.
3. (10 pts) I had to look at solutions to finish to code.
4. (0 pts) I didn't do this.
If you had to look at the solution, briefly describe what you missed but understand now.

[10pts] Consider the following code below. Fill out the table.


char c1, c2;
string s1, s2;

cin >> c1;
if( c1 <= 'Z' )
{
  cin >> c2; 
  if( c2 <= 'Z' )
  {
    cin >> s1;
    cout << c1 << c2 << s1 << endl;
  }
}
else
{
  if( c1 >= 'a' )
  {
    cin >> s1 >> s2;
    cout << c1 << s1 << " " << s2 << endl;
  }
  else
  {
    cout << c1 << endl;
  }
}

Input to the program	Program output
IC210 rocks
Ic210 rocks
ic210 rocks
[210 really rocks]
Homework Homework

[10pts] Consider the following code:
```
int p;
p = 1;
cout << &p << endl;
{
  int p;
  cout << &p << endl;
}
cout << &p << endl;
```
- True or False: The above code will always print out three lines.
- True or False: The program will always print out 1 in the first line of the output.
- True or False: The first line and the second line will always be the same.
- True or False: The first line and the third line will always be the same.
- True or False: The second line and the third line will always be the same.

[10pts] Consider the following code. Fill out the table on the right.


string s, t, r;

cin >> s;
if( s == "hello" )
{
  cin >> t;
  string s;
  s = s + "." + t + ".world";
}

cin >> r;
s = s + "." + r + ".programmers";
cout << s << endl;

Input to the program	Program output
`hello wonderful go`
`computer science nice`

[60pts] A year is a leap year if it is evenly divisible by 4, except that years that are evenly divisible by 100 are not leap years unless they are evenly divisible by 400. For example:

Year divisible by 4? divisible by 100? divisible by 400? Is leap year?

703 no no no not leap year

704 yes no no leap year

700 yes yes no not leap year

800 yes yes yes leap year

Write a program that reads a year and prints out (correctly!) Is Leap Year or Is Not Leap Year.
- Warning: Do not use any logical operators (e.g., || or &&). We haven't learned about them yet.
Here are two example runs.
```
$ ./hw
Enter year: 703
Is Not Leap Year
$ ./hw
Enter year: 704
Is Leap Year
```

Turn in

Written portion: Print out this homework assignment and annotate your answers to the written portion. Turn in the hardcopy in class.
Programming portion: Submit your code hw.cpp to the submission server by using the command below (executed from the same directory as your hw.cpp).
```
~/bin/submit -c=IC210 -p=hw05 hw.cpp
```
Codeprint of hw.cpp: Bring it to class.

Year	divisible by 4?	divisible by 100?	divisible by 400?	Is leap year?
703	no	no	no	not leap year
704	yes	no	no	leap year
700	yes	yes	no	not leap year
800	yes	yes	yes	leap year