c++ program of non preemptive priority based scheduling algorithm

#include <iostream>
using namespace std;


int main()
{    int n;

    cout<<"enter your toal no. of process";
    cin>>n;
    float total,wait[n];
    float p[n],twaiting=0,waiting=0;
    int proc;
    int stack[n];
    float brust[n],arrival[n],sbrust,temp[n],top=n,prority[n];
    int i;
    for(i=0;i<n;i++)
    {
        p[i]=i;
        stack[i]=i;
        cout<<"enter arival time :";
        cin>>arrival[i];
        cout<<endl<<"enter brust time:";
        cin>>brust[i];
        cout<<endl<<"enter prority time:";
        cin>>prority[i];
       
        temp[i]=arrival[i];
        sbrust=brust[i]+sbrust;
             
    }
   
    for(i=0;i<sbrust;i++)
    {   
        //section 1
        proc=stack[0];
        if(temp[proc]==i)
        {
         
            twaiting=0;
        }
        else
        {   
            twaiting=i-(temp[proc]);
         }
           temp[proc]=i+1;   
           wait[proc]=wait[proc]+twaiting;
            waiting=waiting+(twaiting);
            brust[proc]=brust[proc]-1;
                          
        if(brust[proc]==0)
        {
            for(int x=0;x<top-1;x++)
            {
                stack[x]=stack[x+1];
              
            }
            top=top-1;
    
       
        for(int z=0;z<top-1;z++)
        {  
            if((prority[stack[0]]>prority[stack[z+1]]) && (arrival[stack[z+1]] <= i+1))
            {
                   int t=stack[0];
            stack[0]=stack[z+1];
            stack[z+1]=t;
            }
       
        }
           
        }
       
       
    }


cout<<"Average waiting time is:"<<waiting/n;
float tu=(sbrust+waiting)/n;
cout<<endl<<"Average turnaround time is:"<<tu;
return 0;
}

Various Process Scheduling Algorithms:

• First come First served Scheduling Algorithm
• Non preemptive Shortest job first (SJF) scheduling Algorithm
• preemptive shortest job first (SJF) scheduling algorithm
• Non preemptive priority scheduling algorithm
• preemptive priority scheduling algorithm
• Roun Robin scheduling Algorithm

Various Page Replacement Algorithms:

• Page replacement using Least Recently Used (LRU) algorithm techneques.
• Page replacement using First come first served algorithm techniques.

Various Disk Head Movement Counting Algorithms:

• Count the disk head movement using first come first served (FCFS) algorithm
• head movement count using shortest seek job first (SSJF)
• head movement count using scan scheduling algorithm
• head movement count using c-scan scheduling algorithm
• head movement count using loop scheduling algorithm
• head movement count using c-loop scheduling alogrithm