**Coin Toss, v.1.0****Purpose:** Write your first computer game program, from scratch, using if-logic.Pretend that you have been hired by the National Football League (NFL) to write a program to replace the coin toss. Name it `coinToss1.cpp`. The output should be simple: either the word "Heads" or the word "Tails". There is no console input — just run the program, and it says "Heads" or "Tails".**Supplemental:** Read about “randomizing” in [this supplemental PDF](www.rdb3.com/cpp/exercises/Gaming.supplemental.pdf).**Requirement:**1. Use the C++ library’s random number generator, and include the `srand` statement so that the result is not the same every time you run the program.**Program I/O:** - **Input:** none - **Output:** either Heads or Tails**Example:** Heads

Step 1 : STARTStep 2 : generate random number & store in variable called “flip”Step 3 : if flip…

Answered: Requirement. 1. Use the C++ library's…

Database System Concepts

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ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

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**Coin Toss, v.1.0**

**Purpose:** Write your first computer game program, from scratch, using if-logic.

Pretend that you have been hired by the National Football League (NFL) to write a program to replace the coin toss. Name it `coinToss1.cpp`. The output should be simple: either the word "Heads" or the word "Tails". There is no console input — just run the program, and it says "Heads" or "Tails".

**Supplemental:** Read about “randomizing” in [this supplemental PDF](www.rdb3.com/cpp/exercises/Gaming.supplemental.pdf).

**Requirement:**

1. Use the C++ library’s random number generator, and include the `srand` statement so that the result is not the same every time you run the program.

**Program I/O:**
- **Input:** none
- **Output:** either Heads or Tails

**Example:**

Heads

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#include <iostream>
#include <ctime>

using namespace std;

//main function
int main()
{
//calling random number generator function
srand(time(0));

int input;
cout << "Enter the number of tosses to perform: ";
cin >> input; //read input

int counter=0; //initialize counter to 0

while(1) //infinite loop
{
if(counter==input) //if limit reached
break; //exit from loop

int flip = rand() % 2; //get value

if (flip == 0) //if value is 0
cout << "Heads" << endl;
else //if value is 1
cout << "Tails" << endl;

counter=counter+1; //add 1 to counter
}

return 0;
}

the program should be based on the code above, and should not use arrays.

Coin Toss, v.3.0
Purpose. Learn how to use "nested loops" to put "replay" a program that already contains a loop.
Requirements. Rewrite your coinToss2.cpp from exercise 7.4 as coinToss3.cpp. Modify the
program to add another loop that lets the user replay the entire game. If the user enters sentinel value
of 0 (zero) for the number of tosses, break out of the outer replay loop to end the program.
Be sure to explain this to the user in the prompt -- something like: "Enter the number of tosses to
perform [0=exit]:".
Supplemental. Read about "randomizing" in www.rdb3.com/cpp/exercises/Gaming.supplemental.pdf.
Program I/O. Input: a non-negative number from the console keyboard, repeated in a loop until the
sentinel value of 0 is entered. Output: a series of Heads or Tails repeated in a loop until the sentinel
value is entered.
Example. with user input in blue
Enter the number of tosses to perform [0=exit]: 3
Heads
Tails
Heads
Enter the number of tosses to perform [0=exit]: 2
Tails
Tails
Enter the number of tosses to perform [0=exit]: 0

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The program needs to be modified.

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Follow-up Question

The program should be according to the algorithm provided as it says create a counter and set it to zero and if the counter equals the number of tosses to perform, it should break from the loop.

Please refer to the algorithm highlighted.

Coin Toss, v.2.0
Purpose. Learn how to use count-controlled loops.
Requirements. Rewrite your coinTossl.cpp from exercise 6.5 as coinToss2.cpp. Modify the
program to allow the user to specify (via keyboard data entry) the number of coin tosses to perform.
When you run the program, and it should say the result of each coin toss (that is, "Heads" or "Tails").
Supplemental. Read about "randomizing" in www.rdb3.com/cpp/exercises/Gaming.supplemental.pdf.
Algorithm.
Call srand
Prompt the user to enter how many coin tosses to perform
Input and store the user's selection
Create a counter and set it to zero
Start the loop here
If the counter equals the number of tosses to perform
Break from the loop
Get and store a randomly-generated number in the range 0 to 1
If the randomly-generated number equals 0
Output "heads"
If the randomly-generated number equals 1
Output "tails"
Add one to the counter
Loop back from here
Example: with user input in blue
Enter the number of tosses to perform: 3
Heads
Tails
Heads

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Follow-up Question

**Coin Toss, v.2.0**

**Purpose:** Learn how to use count-controlled loops.

**Requirements:** Rewrite your `coinToss1.cpp` from exercise 6.5 as `coinToss2.cpp`. Modify the program to allow the user to specify (via keyboard data entry) the number of coin tosses to perform. When you run the program, it should say the result of each coin toss (that is, "Heads" or "Tails").

**Supplemental:** Read about “randomizing” in [www.rdb3.com/cpp/exercises/Gaming.supplemental.pdf](http://www.rdb3.com/cpp/exercises/Gaming.supplemental.pdf).

**Algorithm:**

1. Call `srand`.
2. Prompt the user to enter how many coin tosses to perform.
3. Input and store the user's selection.
4. Create a counter and set it to zero.
5. Start the loop here:
- If the counter equals the number of tosses to perform, break from the loop.
- Get and store a randomly-generated number in the range 0 to 1.
- If the randomly-generated number equals 0, output "heads."
- If the randomly-generated number equals 1, output "tails."
- Add one to the counter.
6. Loop back from here.

**Example:** With user input in *blue*

Enter the number of tosses to perform: *3*
- Heads
- Tails
- Tails
- Heads

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