Please help me explain this program, I did not understand. The output is:Program Output************************************ numRows 3. No defaults used.s**15return 0;16 }24 void displayStars(int starsPerRow, int17numRows )1825 {/ *:26// Nested loop. The outer loop con-trols the rows and19displayStars27// the inner loop controls the numberof stars per roW.20This function displays a rectangle28for (int row1; row <= numRows;made of asterisks.row++)*21If arguments are not passed to it, it29{*uses the default *30for (int star1; star <= stars-%3D22arguments 10 for starsPerRow and 1PerRow; star++)for numRows.31cout <<2332cout <« endl; 3 using namespace std;4Program 6-22 illustrates the use of default func-tion arguments. It has a function that displays aster-isks on the screen. This function receives arguments5 // Function prototype with default argu-ments6 void displayStars(int starsPerRow =10,specifying how many rows of asterisks to displayand how many asterisks to print on each row.int numRows1);7Default arguments are provided to display one rowof 10 asterisks.8 int main( )9 {10displayStars();// starsPerRow &numRows use defaults (10 & 1)Program 6-2211cout << endl;12displayStars(5);// starsPerRow 5.numRows uses default value 11 // This program demonstrates the use of13cout << endl;default function arguments.14displayStars(7, 3); // starsPerRow 7.2 #include

Answered: 3 using namespace std; 4 Program 6-22…

Computer Networking: A Top-Down Approach (7th Edition)

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ISBN:9780133594140

Author:James Kurose, Keith Ross

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Question

Please help me explain this program, I did not understand.

The output is:

Program Output

**********

*****

*******
*******
*******

numRows 3. No defaults used.
s**
15
return 0;
16 }
24 void displayStars(int starsPerRow, int
17
numRows )
18
25 {
/ *:
26
// Nested loop. The outer loop con-
trols the rows and
19
displayStars
27
// the inner loop controls the number
of stars per roW.
20
This function displays a rectangle
28
for (int row
1; row <= numRows;
made of asterisks.
row++)
*
21
If arguments are not passed to it, it
29
{
*
uses the default *
30
for (int star
1; star <= stars-
%3D
22
arguments 10 for starsPerRow and 1
PerRow; star++)
for numRows.
31
cout <<
23
32
cout <« endl;

3 using namespace std;
4
Program 6-22 illustrates the use of default func-
tion arguments. It has a function that displays aster-
isks on the screen. This function receives arguments
5 // Function prototype with default argu-
ments
6 void displayStars(int starsPerRow =
10,
specifying how many rows of asterisks to display
and how many asterisks to print on each row.
int numRows
1);
7
Default arguments are provided to display one row
of 10 asterisks.
8 int main( )
9 {
10
displayStars();
// starsPerRow &
numRows use defaults (10 & 1)
Program 6-22
11
cout << endl;
12
displayStars(5);
// starsPerRow 5.
numRows uses default value 1
1 // This program demonstrates the use of
13
cout << endl;
default function arguments.
14
displayStars(7, 3); // starsPerRow 7.
2 #include <iostream>

Expert Solution

Step 1

While creating the function we can set the arguments of the function with some default value so that if the user forgets to pass the parameter while calling the function then the function is executed using the default values and no error has occurred.

Here also we have declared the function with default values.