CS102 - Quiz 1 Solutions

You have up to 20 minutes. Please write your answers on this page, and your name at the top. You may not use the computer, notes, or books.

Which of the following statements prints exactly this text, as shown:
```
We the
PEOPLE
```
Select all that apply.
1. cout << "We the PEOPLE" << endl;
2. cout << "We the" << "endl" << "PEOPLE" << "endl";
3. cout << "We" << " the" << endl << "PEOPLE" << endl;
4. cout << "We the" << endl << "PEOPLE" << endl;
5. cout << "WE the" << endl << "people";
Both c and d produce the required output.
Given a variable maxDays = 14, which statement prints 14?
1. cout >> maxDays;
2. cout << maxDays;
3. cout << "maxDays";
4. print maxDays;
Only b.
Which of these are valid C++ comments, that will be ignored by the compiler? Select all that apply.
1. /* Hello world */
2. "Hello world"
3. # Hello world
4. /* Hello world
5. -- Hello world
6. (( Hello world ))
7. // Hello world
The valid comment forms are a, g.
Circle and describe any syntax errors in this program:

#include <iostream>
using namespace;
INT main( )
{
    int score = 100;
    cout << 'Hello world.' << endl
    cout < score < '%';
    return 0;
}

Missing namespace std
Should lowercase INT
Need double quotes around “Hello world”
Need semi-colon after endl
Need double less-than << on second cout

Below is a simple C++ program containing a calculation and some output. What would it output when you run it?

#include <iostream>
using namespace std;
int main()
{
    int lisa = 8;
    int bart = lisa + 2;
    int maggie = bart - 7;
    cout << maggie << ", " << bart << lisa << endl;
    return 0;
}

3, 108

PDF version