4.2 Блок-схема программы:
4.3 Листинг программы:
#include "math.h"
#include "iostream.h"
#include "stdio.h"
#include "stdlib.h"
#include "conio.h"
void main()
{
randomize();
double lyambda=0, mu=0, time, Tobsl=0, t=0,Ivh,Iobsl,Po,A,KolKan,Potk,Q;
int Cz=0,Co=0,Cobsl=0,S=0,kol;
cout<<"Vvedite intensivnost vhodnogo potoka: ";
cin>>Ivh;
cout<<"Vvedite intensivnost potoka obsluzhivaniya: ";
cin>>Iobsl;
cout<<"Vvedite kolichestvo progonov: ";
cin>>kol;
cout<<"\n";
for(int i=1; i<=kol; i++)
{
cout<<"Progon "<<i<<":\n";
cout<<"Vvedite vremya raboti sistemi: ";
cin>>time;
do
{
if(S==0)
{
lyambda=(-1)*log(random(1000)/1000.0+0.001)/Ivh;
S=1;
t+=lyambda;
Cz++;
Cobsl++;
}
if(S==1)
{
lyambda=(-1)*log(random(1000)/1000.0+0.001)/Ivh;
mu=(-1)*log(random(1000)/1000.0+0.001)/Iobsl;
if(lyambda<mu)
{
S=2;
t+=lyambda;
Cz++;
Cobsl++;
Tobsl+=lyambda;
}
else
{
S=0;
t+=mu;
Tobsl+=mu;
}
}
if(S==2)
{
lyambda=(-1)*log(random(1000)/1000.0+0.001)/Ivh;
mu=(-1)*log(random(1000)/1000.0+0.001)/Iobsl;
if(lyambda<mu)
{
S=2;
t+=lyambda;
Cz++;
Co++;
Tobsl+=lyambda;
}
else
{
S=1;
t+=mu;
Tobsl+=mu;
}
}
}
while(t<time);
Po=(time -Tobsl)/2/time;
Potk=(double)Co/(double)Cz;
Q=(double)Cobsl/(double)Cz;
A=(double)Cobsl/time;
KolKan=(time-Tobsl)/time;
cout<<"Kolichestvo zayavok: "<<Cz<<"\n";
cout<<"Kolichestvo obsluzhennih zayavok: "<<Cobsl<<"\n";
cout<<"Otkazano "<<Co<<" zayavke(am)\n";
cout<<"Veroyatnost prostoya: "<<Po<<"\n";
cout<<"Veroyatnost otkaza: "<<Potk<<"\n";
cout<<"Dolya obsluzhennih zayavok: "<<Q<<"\n";
cout<<"Absolyutnaya propusknaya sposobnost: "<<A<<"\n";
cout<<"Srednee chislo zanyatih kanalov: "<<KolKan<<"\n\n";
}
getch();
}