CSC 215

Fall '98 Section 701

Sample midterm questions

Listed below are questions similar to those I will put on the midterm. Sample solutions will be posted Thursday.

• Write a function with the header:

    double average(double a, double b)
    

  that returns the average of a and b.

• Write a function with the header:

    int minimum(int i, int j)
    

  that returns the smaller of i and j.

• Write a function with the header:

    double convert(double Britishpounds)
    

  where Britishpounds contains an amount in British pounds sterling; the function should return what that amount is in US dollars. The conversion rate is 0.66 pounds per dollar.

• Write a function with the header:

    int sum(int i, int n)
    

  that returns the sum of the integers from i to n.

• Write a function with the header:

    int getMonth()
    

  that prints the prompt "Please enter a month: " and then accepts only a value between 1 and 12. It should work by looping until the user enters a legal value. It then returns the user's answer.

• What is printed by the following program?

  //
  // 
  //
  
  #include <iostream.h>
  
  int square(int n)
  {
    int answer;
    answer = n * n;
    return answer;
  }
  
  int main()
  {
    int index;
    int limit = 5;
    int answer = 0;
  
    for (index = 1; index <= limit; index++) {
      cout << index << ", " << square(index) << endl;
      answer = answer + square(index);
    }
  
    cout << answer << endl;
    return 0;
  }
  
  
  

• What is printed by the following program?

  //
  // 
  //
  
  #include <iostream.h>
  
  int main()
  {
    int value = 32;
  
    while (value > 1) {
      cout << value << endl;
      value = value / 2;
    }
  
    return 0;
  }