LAB 5.1 working with the while loop

Bring in program sentinel1.cpp from the Lab 5 folder. The code is shown below:

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// This program illustrates the use of a sentinel in a while loop.

// The user is asked for monthly rainfall totals until a sentinel

// value of -1 is entered. Then the total rainfall is displayed.

// PLACE YOUR NAME HERE

#include

using namespace std;

int main()

{

// Fill in the code to define and initialize to 1 the variable month

float total = 0, rain;

cout

cout

// Fill in the code to read in the value for rain

// Fill in the code to start a while loop that iterates

// while rain does not equal -1

{

// Fill in the code to update total by adding it to rain

// Fill in the code to increment month by one

cout

cout

// Fill in the code to read in the value for rain

}

if (month == 1)

cout

else

cout

return 0;

}

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Exercise 1: Complete the program above by filling in the code described in the statements in bold so that it will perform the indicated task.

Exercise 2: Run the program several times with various input. Record your results. Are they correct? What happens if you enter -1 first? What happens if you enter only values of 0 for one or more months? Is there any numerical data that you should not enter?

Exercise 3: What is the purpose of the following code in the program above?

if (month == 1)

cout

C\Userslelee\ DesktoplTest-CPSC2301DebuglTest-CPSC230.exe Enter the total rainfall in inches for month 1 Enter-1 when you are finished No data has been entered Press any key to continue