Question

use basic c++

3. In the game of cricket, based on his past statistics of play, a batsman has the probability of scoring runs when he "faces" a ball as shown in the Probability Runs 6 5% 3% 1 a. Write a function to simulate how many balls the batsman must face to score five (5) sixes or ten (10) fours or get out. Your function must 2 table. 12% 4 5% 25% [6] 30% return the number of balls faced by the batsman. b. Using your function in a., write code to perform five (5) simulations [3] 13% 7% out and display the average number of balls needed. Total marks: 9

Answer 1

Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

#include<iostream>

#include<stdlib.h>

using namespace std;

//helper method that simulates a ball faced by batsman, returns the runs

//scored in that ball. returns -1 if the batsman is out

int faceBall(){

                //generating a value between 1 and 100, representing a percentage

                int i=(rand()%100)+1;

                //finding the result based on value of i

                if(i<=5){

                                //5% time - 6

                                return 6;

                }else if(i<=8){

                                //3% time - 5

                                return 5;

                }else if(i<=20){

                                //12% time - 4

                                return 4;

                }else if(i<=25){

                                //5% time - 3

                                return 3;

                }else if(i<=50){

                                //25% time - 2

                                return 2;

                }else if(i<=80){

                                //30% time - 1

                                return 1;

                }else if(i<=93){

                                //13% time - 0

                                return 0;

                }else{

                                //7% time - out

                                return -1;

                }

}

//method to perform the simulation

int simulate(){

                //declaring number of sixes, fours, and balls to 0

                int sixes=0, fours=0, balls=0;

                int result;

                //looping

                do{

                                //facing a ball

                                result=faceBall();

                                //incrementing number of balls

                                balls++;

                                //if result is a 6, incrementing sixes

                                if(result==6){

                                               sixes++;

                                }

                                //if result is a 4, incrementing fours

                                else if(result==4){

                                               fours++;

                                }

                                //if result is a -1, batsman is out, returning the balls

                                else if(result==-1){

                                               return balls;

                                }

                }while(sixes<5 && fours<10); //until user hits 5 sixes OR 10 fours

                return balls; //returning the balls faced

}

int main(){

                //declaring total balls to 0

                int total_balls=0;

                //simulating for 5 times

                for(int i=0;i<5;i++){

                                //adding number of balls needed to total balls

                                total_balls+=simulate();

                }

                //finding average balls needed and displaying it

                double avg=(double)total_balls/5;

                cout<<"An average of "<<avg<<" balls needed to score 5 sixes or 10 fours or get out"<<endl;

                return 0;

}

/*OUTPUT*/

An average of 15.8 balls needed to score 5 sixes or 10 fours or get out