If statements I

Name: ____________________________________________________ Alpha: _____________ Section: ___________

Describe help received: _____________________________________________________________________

See the bottom for how to submit your work.

Due: Before 0800 on next class day

[10 pts] Read today's lecture notes carefully. 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.

[10pts] For each of the below, circle the correctly parenthesized version of the expression and circle "precedence" or "associativity" as appropriate.

expression	evaluated as	due to
x + y * z	(x + y) * z OR x + (y * z)	precedence OR associativity
x > y + z	(x > y) + z OR x > (y + z)	precedence OR associativity
cin >> x >> y	(cin >> x) >> y OR cin >> (x >> y)	precedence OR associativity
x = y = 1	(x = y) = 1 OR x = (y = 1)	precedence OR associativity
x = y == z	(x = y) == z OR x = (y==z)	precedence OR associativity

[16pts] Fill in the table on the right.

int n = 5;
double x = 10.5;
char c = 'R';

Note: each expression should be taken as independent. I.e. if one expression modifies some variable values, those modifications do not carry over to the next expression.

expression	type	value
`n = 2`
`n == 2`
`c < 200`
`1 != x`
`1 < x < 10`
`1 < x && x < 10`
`!n`
`c == int('R')`

[4pts] Fill in the conditions on the if statements on the right so that they are equivalent. You may want to review how logical operators (i.e., &&, ||, !) work (see the notes on class 3).


if (a <= 'k')
{
  cout << "easy";
}
else
{
  if (a >= 'q')
    cout << "easy";
  else
    cout << "tough";
}


if (_____________________________________________)
{
  cout << "easy";
}
else
{
  cout << "tough";
}

[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 hw.cpp that reads in a year and prints out (correctly) Is Leap Yar or Is Not Leap Year. A typical run of the program should look like this (user input colored red):
```
  $ ./hw
  Enter year: 703
  Is Not Leap Year
  
```
```
  $ ./hw
  Enter year: 2020
  Is Leap Year
  
```

Turn in (Due: 0800 on the next class day)

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
```

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