Name: ____________________________________________________ Alpha: _____________________

    Describe help received: _________________________________________________________________

  1. [10pts] Identify all function prototypes, function definitions, function calls, function arguments, and function parameters in the program below. 
    #include <iostream>
#include <fstream>
using namespace std;

bool readRow(int len);

int main()
{
  int rows, cols;
  char t;
  cin >> rows >> t >> cols;

  int count = 0;
  for(int r = 0; r < rows; r++)
    if (readRow(cols))
      count++;

  cout << count << endl;
  return 0;
}

bool readRow(int len)
{
  int n = 0;
  for(int i = 0; i < len; i++)
  {
    char c;
    cin >> c;
    if (c == 'Y')
      n++;
  }
  return n > 0;
}
  2. [80pts] Write a program that reads in a list of fractions from the user, each separated by commas and the whole terminated by a semicolon, prints out the ones that are not in lowest terms. For example, a typical run might look like this: 
    ~/$ ./hw
2/4, 6/9, 3/11, 21/5, 8/10;
2/4 is not in lowest terms!
6/9 is not in lowest terms!
8/10 is not in lowest terms!
    In writing this program, define and use a function int gcd(int,int); that takes two positive integers and returns their greatest common divisor. (Check out Class 10 to remind yourself about computing gcd's.) Turn In this cover sheet, along with a printout of your program along with a screen capture showing your program running on the above input (and, of course, this sheet).
  3. [10pts] Assume that you have a function with prototype void rep(int k, char c); that simply prints k copies of the character c to standard output (i.e. with cout). Write a code fragment using this function to print a hollow rectangle of *'s to the screen (as in an earlier homework) of dimension height 40 and width 65 characters, indented by 15 spaces.