Question

The provided code is my solution, stripped of the details needed to make it work. It is not a “good” program. It lives in a single file, does not use classes, and it has those evil global variables. That is by design. I want to to craft code. Use my code as a guide to help you put together the needed parts.

#include

#include

#include

// defaults

const int MAX_STEPS = 100; // how long do we run the simulation

const int MAX_DANCERS = 20; // no more than this many dancers allowed

const int INIT_STEPS = 10; // we will run this many steps unless overridden

const int INIT_DANCERS = 5; // start with this many dancers, unless overridden

const int INIT_CARDS = 6; // start with this many cards

// globals are UGLY!

int cards[MAX_DANCERS+1] = {0}; // every dancer starts with no cards

int nsteps = INIT_STEPS;

int ndancers = INIT_DANCERS;

int ncards = INIT_CARDS;

bool debug = false;

bool stable = false;

void usage() {

std::cout << "Usage: "

<< "dancer [-d] [-c cards] [-n dancers] [-s steps]"

<< std::endl;

exit(1);

}

void show_cards() {

// display the current cards

for(int i=0;i

std::cout

<< cards[i]

<< " ";

std::cout << std::endl;

}

std::string show_step(int d) {

std::ostringstream out;

out << "("

<< cards[d]

<< ","

<< cards[d+1]

<< ")";

return out.str();

}

void arg_parse(int argc, char *argv[]) {

// process input parameters

int i=1;

while(true) {

if(i>=argc) break;

if(argv[i][0] == '-')

switch(argv[i][1]) {

case 'c': ncards = std::stoi(argv[++i]); break;

case 'n': ndancers = std::stoi(argv[++i]); break;

case 's': nsteps = std::stoi(argv[++i]); break;

case 'd': debug = true; break;

default: usage();

} else usage();

i++; // look for next arg

}

}

void dance_step(int dancer, int step) {

// this dancer needs to get happy!

if(debug) std::cout << "\tstep: "

<< step << " dancer "

<< dancer << std::endl;

// show current cards

if(debug) std::cout << "\t "

<< show_step(dancer) << " --> ";

// balance the cards

// show the final cards

if(debug) std::cout << show_step(dancer) << std::endl;

}

int main(int argc, char *argv[]) {

// say hello

std::cout << "Dance-Cards (v0.1)" << std::endl;

arg_parse(argc, argv);

if(debug) {

std::cout << ndancers

<< " dancers will dance "

<< nsteps << " steps" << std::endl;

std::cout << "Initial card count is "

<< ncards << std::endl;

}

// let the music begin!

if(debug) std::cout << "Let the dance begin!" << std::endl;

cards[0] = ncards;

show_cards();

for(int step=0; stepfor(int dancer=0; dancer

dance_step(dancer, step);

}

if(stable) {

std::cout << "system is stable" << std::endl;

break;

}

show_cards();

}

}

Answer 1

/*
* Parser.h
*/

#define MAX_STEPS 100
#define MAX_DANCERS 20
#define INIT_STEPS 10
#define INIT_DANCERS 5
#define INIT_CARDS 6

class CLASS
{
private:
int nsteps;
int ndancers;
int ncards;
bool debug;
bool stable;

public:
int cards[MAX_DANCERS+1] = {0}; // every dancer starts with no cards

CLASS();

int get_nsteps();

int get_ndancers();

int get_ncards();

bool get_debug();

bool get_stable();

void usage();

void show_cards();

std::string show_step(int d);

void arg_parse(int argc, char *argv[]);


void dance_step(int dancer, int step);

};
/* Parser.cpp */





/*
* Parser.cpp
*/

#include "Parser.h"

CLASS :: CLASS()
{
nsteps = INIT_STEPS;
ndancers = INIT_DANCERS;
ncards = INIT_CARDS;
debug = false;
stable = false;
}

int CLASS :: get_nsteps() { return nsteps; }

int CLASS :: get_ndancers() { return ndancers; }

int CLASS :: get_ncards() { return ncards; }

bool CLASS :: get_debug() { return debug; }

bool CLASS :: get_stable() { return stable; }

void CLASS :: usage()
{
std::cout << "Usage: " << "dancer [-d] [-c cards] [-n dancers] [-s steps]" << std::endl;
exit(1);
}

void CLASS :: show_cards()
{
for(int i = 0; i < MAX_DANCERS; i++)
std::cout << cards[i] << " ";
std::cout << std::endl;
}

std::string CLASS :: show_step(int d)
{
std::ostringstream out;
out << "(" << cards[d] << "," << cards[d+1] << ")";
return out.str();
}

void CLASS :: arg_parse(int argc, char *argv[])
{
// process input parameters
int i=1;

while(true)
{
if(i>=argc)
break;
if(argv[i][0] == '-')
{
switch(argv[i][1])
{
case 'c' : ncards = std::stoi(argv[++i]);
break;
case 'n' : ndancers = std::stoi(argv[++i]);
break;
case 's' : nsteps = std::stoi(argv[++i]);
break;
case 'd' : debug = true;
break;
default : usage();
}
}
else
usage();

i++; // look for next arg
}
}

void CLASS :: dance_step(int dancer, int step)
{

if(debug) std::cout << "     step: " << step << " dancer " << dancer << std::endl;

// show current cards
if(debug) std::cout << "       " << show_step(dancer) << " --> ";

// balance the cards
// show the final cards
if(debug) std::cout << show_step(dancer) << std::endl;

}
/* Parser.cpp ends here */




/*
* Main.cpp
*/

#include <iostream>
#include <string>
#include <sstream>

#include "Parser.cpp"

int main(int argc, char *argv[])
{
std::cout << "Dance-Cards (v0.1)" << std::endl;

CLASS obj;

obj.arg_parse(argc, argv);

if(obj.get_debug())
{
std::cout << obj.get_ndancers() << " dancers will dance " << obj.get_nsteps() << " steps" << std::endl;
std::cout << "Initial card count is " << obj.get_ncards() << std::endl;
}

// let the music begin!

if(obj.get_debug())
std::cout << "Let the dance begin!" << std::endl;

obj.cards[0] = obj.get_ncards();

obj.show_cards();

for(int step = 0; step < obj.get_nsteps(); step++)
{

for(int dancer = 0; dancer < obj.get_ndancers(); dancer++)
{
obj.dance_step(dancer, step);
}

if(obj.get_stable())
{
std::cout << "system is stable" << std::endl;
break;
}
obj.show_cards();
}
}
/* Main.cpp ends file */

$CAUsers TusharkDesktoplnew Parser Main.cpp [Executing] - Dev-C++5.11 File Edit Search View Project Execute Tools AStyle WindowHelp Main.cpp Parser.h Pr.cpp #include <string> 2 3 #include<sstream3 #include Parser.cpp. int mair int argc, char argv 5 Dance-Cards (ve.1) std::cout <<Dance-Cards (ve.l) <<std: CLASS obj.; obj.arg parse(argc, argv); if (obj.get_debugO) std ::cout << obj.get_ndancers() <<-e6 θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ std::cout <<Initial card countis Process exited after θ.3888 seconds with return value θ Press any key to continue . . ._ // Let the music beginl if (obj.get_debugO) std::cout <Let the dance begin!< Compiler % Resources ilh compile Log Debug @ -Command: g++ exe C : \Us Compilation results Shorten compiler paths- Errors: o - Warnings: 0 - Output Filename: C:\Use - Output Size: 1.44678211 - Compilation Time: 1.77s Line с01: 33 Sel: 0 Lines: 45 Length: 901 parsing in 0.031 seconds 01:01 AM$

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