CSCI 240 - Midterm Test Sample Question Solutions

There may be other possible solutions to some of the questions.

1. B
2. D
3. 1
4. 3
5. 18
6. arguments
7. true or false
8. value with a symbolic (meaningful) name  
9. {} braces

10.

string getLet()
{
string ans;
 
cout << "Enter a letter (a..d)";
cin >> ans;   
 
while (ans != "a") && 
       ans != "b") && 
       ans != "c") && 
       ans != "d"))
    {
    cou << "\nError: reenter a..d";
    cin >> ans;
    }
  return (ans);
}

11. cout << getAns());

12.

2nd output 0


2nd output 2


2nd output 4


1st output 6


1st output 8

13.

#include <iostream>
using namespace std;

int main()
  {
  int sum = 0;
  int n, i;
 
  cout << "Enter n: ";
  cin >> n;
 
  for (i = 1; i <= n; i++)
    sum += i;
 
  cout << sum;
}
 

14.

A. 
int i;
 
for (i = 1; i <= 5; i++)
    cout << i;
 
B.
int i = 1;
 
while (i <= 5)
    {
    cout << i;
    i++;
    }
 
C.
int i = 1;
 
do 
    {
    cout << i;
    i++;
    }
while (i <= 5);