CECS 282
LAB ASSIGNMENT #2
Assigned date: 2/2
Due date: 2/9
20 points

Pre-lab

Before doing this lab assignment, you need to do the following activities:

• Understand the following C++ topics: arrays and text file input and processing.
• Review the lecture note on arrays posted on the class website.

Problem 1 - [10 points]

The Weather Service Bureau department has data representing  monthly rainfall for a year and we would like to create a table categorizing each month as rainy (rainfall 20% higher than average) dry (rainfall 25% lower than average). or average. The data file for monthly rain fall is called rainfall.txt.

Output
The year's average monthly rainfall was 139 mm.
September has the highest rainfall (190 mm).
January has the lowes rainfall (95 mm)

Month      Rainfall(mm)      Classification
-------      ---------------         --------------
    1                   95                   Dry
    2                 100                   Dry
    3                 120               Average
    4                 130               Average
    5                 135               Average
    6                 145              Average
    7                 155              Average
    8                 185                Rainy
    9                 190                Rainy
  10                 160             Average
  11                 130             Average
  12                 120             Average

Program Requirements:

Implement the following functions in the program:

1. void inputRainfall(int rainFal l[], int size)
   The function reads the monthly rainfall from the file rainFall.txt and stores them in the array rainFall
2. int calculateAverageRainFall(int rainFall [], int size)
   Return the average monthly rainfall (rounded to the nearest millimeter).
3. void classifyAndDisplayRainfall(int rainFall[], int months);
   Display the average monthly rainfall, the month with the highest rainfall, and the month with the lowest rainfall.
   Also classify each month as average, rainy, or dry.

Hint:

Read data from a file.

1. #include<fstream>
2. void inputRainFall(float rainFall[], int size)
   //Open the file
   ifstream inputFile;
   inputFile.open("rainfall.txt");
   //Initialize month counter
   int month = 0; //first month
   //Read the monthly rainfall in the file
   inputFile >> rainFall[month];
   

GRADING

• Inside the program, put your name at the beginning of your program
  //YOUR NAME
  // CECS 282 LAB 21
• Return a hard copy of the lab assignment.
• Demonstrate the lab assignments in the lab.
• Grade based on the successful execution of the program and the coding efficiency.
• Submit the lab assignment to the Beachboard.

Problem 2 - [10 points]

Write a program that create a two-dimensional array initialized with test data. The program should have the following functions:

• getTotal - This function should accept two-dimensional array as its argument and return the total of all the values in the array.
• getAverage - This function should accept a two-dimensional array as its argument and return the average of values in the array.
• getRowTotal - This function should accept a two-dimensional array as its first argument and an integer as its second argument. The second argument should be the subscript of a row in the array. The function should return the total of the values in the specified row.
• getColumnTotal - This function should accept a two-dimensional array as its first argument and an integer as its second argument. The second argument should be the subscript of a column in the array. The function should return the total of the values in the specified column.
• getHighestInRow - This function should accept a two-dimensional array as its first argument and an integer as its second argument. The second argument should be the subscript of a row in the array. The function should return the highest value in the specified row in the array.
• getLowestInRow - This function should accept a two-dimensional array as its first argument and an integer as its second argument. The second argument should be the subscript of a row in the array. The function should return the lowest value in the specified row in the array.

Use the main method below to test the program.

int main()
{
// Array with test data
int testArray[ROWS][COLS] =
{ { 1, 2, 3, 4, 5 },
{ 6, 7, 8, 9, 10 },
{ 11, 12, 13, 14, 15 },
{ 16, 17, 18, 19, 20 }
};

// Display the total of the array elements.
cout << "The total of the array elements is "
<< getTotal(testArray, ROWS, COLS)
<< endl;

// Display the average of the array elements.
cout << "The average value of an element is "
<< getAverage(testArray, ROWS, COLS)
<< endl;

// Display the total of row 0.
cout << "The total of row 0 is "
<< getRowTotal(testArray, 0, COLS)
<< endl;

// Display the total of column 2.
cout << "The total of col 2 is "
<< getColumnTotal(testArray, 2, ROWS)
<< endl;

// Display the highest value in row 2.
cout << "The highest value in row 2 is "
<< getHighestInRow(testArray, 2, COLS)
<< endl;

// Display the lowest value in row 2.
cout << "The lowest value in row 2 is "
<< getLowestInRow(testArray, 2, COLS)
<< endl;

return 0;
}

Output sample

The total of the array elements is 210
The average value of an element is 10.5
The total of row 0 is 15
The total of col 2 is 42
The highest value in row 2 is 15
The lowest value in row 2 is 11

GRADING

• Inside the program, put your name at the beginning of your program
  //YOUR NAME
  // CECS 282 LAB 21
• Return a hard copy of the lab assignment.
• Demonstrate the lab assignments in the lab.
• Grade based on the successful execution of the program and the coding efficiency.
• Submit the lab assignment to the Beachboard.