Priority CPU Scheduling Algorithm in C++

#include <iostream>

using namespace std;

int main()
{
    clrscr();
    int n,i,a[5],b[5],bt;
    float p;
    cout<<"Enter no. of process : ";
    cin>>n;


    for(i=0;i<n;i++)
    {
        cout<<"\nEnter Burst time of process "<<i+1<<" : ";
        cin>>bt;
        cout<<"Enter priority of process "<<i+1<<" : ";
        cin>>p;
        a[p-1]=bt;
    }

    p=0;
    b[0]=a[0];

    for(i=1;i<n;i++)
    {
        b[i]=b[i-1]+a[i];
    }

    for(i=0;i<n-1;i++)
    {
        p+=b[i];
    }

    cout<<"\nAverage Waiting Time = "<<p/n;
    
    getch();
}

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