Question

Please write the following code in C++ for Data Structures class. Please follow all the instructions in the picture below. Please write the program with zero warnings.

Description: Please write a short program, randomStream, that asks for the name of a file and a number, and produces a files satisfying the following conditions: The file name is the name given by the user (exactly--no added suffixes please) The number of lines in the file is exactly the same as the number provided by the user Each line is randomly* chosen to be one of the following lines: The letter "A" followed by a space and a randomly chosen number between INT_MIN and INTIMAX (for these to be defined, make sure your file #includes climits) The letter "D" The letter "P" The letter "E" The letter "C" The letter "S" Please make sure your program is well organized and well commented, and that you close the file before you exit. Your program must have a function, randomStream(std::string filename, int length) that actually produces the output file. "Be careful with your random number generators. You should use uniform int distribution (http://en.cppreference.com/w/cpp/numeric/random/uniform_int_distribution). You will need 2 different sequences of random numbers-one is between 0 and 5 (for the "A", "D", "P", "E", "C", "S"), the other between INT MIN and INT MAX (for the number to follow "A"). For example, you might run the program and have the following input/output: >randomStream Please input a filename: myfile.txt How many iterations: 10 If you were to look at the file, you might find the following contents: -2343324324 A 5453432 A-21324235345

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<fstream>

#include<climits>

#include<ctime>

#include<random>

using namespace std;

//objects needed for random number generation

default_random_engine generator(time(NULL)); //seeding generator with time

uniform_int_distribution<int> distribution(INT_MIN,INT_MAX);

//required method

void randomStream(string filename, int length){

                //opening output file to write

                ofstream outFile(filename.c_str());

                //creating a string containing letters A,D,P,E,C and S

                string characters="ADPECS";

                //looping for length times

                for(int i=0;i<length;i++){

                                //generating a value between 0 and 5

                                int index=abs(distribution(generator))%6;

                                //fetching character at above index from characters string

                                char c=characters[index];

                                //checking if c is 'A'

                                if(c=='A'){

                                                //generating a random number (between INT_MIN and INT_MAX as specified in the uniform_int_distribution

                                                //object during declaration)

                                                int randNum=distribution(generator);

                                                //writing character followed by space and then random number on a line

                                                outFile<<c<<" "<<randNum<<endl;

                                }else{

                                                //writing just the character

                                                outFile<<c<<endl;

                                }

                }

                //closing file, saving changes

                outFile.close();

               

}

int main(){

                string filename;

                int lines;

                //asking and reading input file name

                cout<<"Please input a filename: ";

                getline(cin,filename);

                //asking and reading number of iterations or lines

                cout<<"How many iterations: ";

                cin>>lines;

                //calling randomStream object, passing these values

                randomStream(filename,lines);

                return 0;

}

/*OUTPUT*/

Please input a filename: output.txt

How many iterations: 20

/*output.txt file after running this program */

A -1945192792

S

E

A -103762458

P

A 1098281750

P

D

P

P

E

C

D

P

D

A 577068979

P

E

E

A 136124208