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#include <iostream>
#include <fstream>
#include <cstdlib>
#include <iomanip>
using namespace std;
const double DEATH_RATE = 0.1;
const double CONVERSION_RATE = 0.00001;
const double GROWTH_RATE = 0.4;
const double WOLF_ABILITY = 0.0005;
const int CAPACITY = 30000;
const int YEARS = 100;
const int TABLE_INCREMENT = 10;
void validate(int[], int[], int, char[]);
void populate(int[], int[]);
void computeMinimum(int[], int&);
void computeMaximum(int[], int&);
void writeOut(ofstream&, int, int, int, int, int[], int[]);
int main(int argc, char *argv[])
{
int wolfMax = 0;
int wolfMin = 0;
int mooseMax = 0;
int mooseMin = 0;
int wolves[101] = {0};
int moose[101] = {0};
moose[0] = 100;
wolves[0] = 10000;
ofstream report;
report.open("report.txt");
cout << argv[1];
validate(moose, wolves, argc, argv);
populate(wolves, moose);
computeMinimum(wolves, wolfMin);
computeMaximum(wolves, wolfMax);
computeMinimum(moose, mooseMin);
computeMaximum(moose, mooseMax);
writeOut(report, wolfMin, wolfMax, mooseMin, mooseMax, wolves, moose);
return 0;
}
void computeMaximum(int data[], int& q)
{
int comp = data[0];
for(int k = 1; k < YEARS; k++)
{
if(comp < data[k])
{
comp = data[k];
q = k;
}
}
}
void computeMinimum(int data[], int& p)
{
int comp = data[0];
for(int j = 1; j < YEARS; j++)
{
if(comp > data[j])
{
comp = data[j];
p = j;
}
}
}
void populate(int wolves[], int moose[])
{
for(int i = 1; i < YEARS; i++)
{
wolves[i] = ((1 - DEATH_RATE + CONVERSION_RATE * moose[i - 1]) * wolves[i -1]);
moose[i] = (1 + GROWTH_RATE - (GROWTH_RATE * moose[i - 1]) / (CAPACITY - WOLF_ABILITY * wolves[i - 1]) * moose[i - 1]);
}
}
void validate(int moose[], int wolves[], int argc, char *argv[])
{
if(argc == 3)
{
wolves[0] = atoi(argv[1]);
moose[0] = atoi(argv[2]);
}
}
void writeOut(ofstream& report, int wolfMin, int wolfMax, int mooseMin, int mooseMax, int wolves[], int moose[])
{
report << "----------" << "Year" << "----------" << "Wolf" << "----------" << "Moose" << endl;
for(int k = 0; k < YEARS; k += TABLE_INCREMENT)
{
report << setw(15) << k << wolves[k] << moose[k] << endl;
}
report << "The minimum population for wolves was" << wolves[wolfMin] << "in year" << wolfMin;
report << "The maximum population for wolves was" << wolves[wolfMax] << "in year" << wolfMax;
report << "The minimum population for moose was" << moose[mooseMin] << "in year" << mooseMin;
report << "The minimum population for wolves was" << moose[mooseMax] << "in year" << mooseMax;
}
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