Consider Context Switch time of 2 secs and modify below program accordingly Program: SJF CPU SCHEDULING ALGORITHM: #include #include using namespace std; int main() { int p[20], bt[20], wt[20], tat[20], i, k, n, temp; float wtavg, tatavg; printf("\nEnter the number of processes--"); scanf("%d", &n); for(i=0;ibt[k]) { temp=bt[i]; bt[i]=bt[k]; bt[k]=temp; temp=p[i]; p[i]=p[k]; p[k]=temp; } wt[0] = wtavg = 0; tat[0] = tatavg = bt[0]; for(i=1;i
Consider Context Switch time of 2 secs and modify below program accordingly
Program:
SJF CPU SCHEDULING
#include<stdio.h>
#include<conio.h>
using namespace std;
int main()
{
int p[20], bt[20], wt[20], tat[20], i, k, n, temp; float wtavg, tatavg;
printf("\nEnter the number of processes--"); scanf("%d", &n);
for(i=0;i<n;i++)
{
p[i]=i;
printf("Enter Burst Time for Process %d--", i); scanf("%d", &bt[i]);
}
for(i=0;i<n;i++)
for(k=i+1;k<n;k++)
if(bt[i]>bt[k])
{
temp=bt[i];
bt[i]=bt[k];
bt[k]=temp;
temp=p[i];
p[i]=p[k];
p[k]=temp;
}
wt[0] = wtavg = 0; tat[0] = tatavg = bt[0];
for(i=1;i<n;i++)
{
wt[i] =wt[i-1]+bt[i-1];
tat[i] =tat[i-1]+bt[i];
wtavg = wtavg + wt[i];
tatavg = tatavg + tat[i];
}
printf("\n\t PROCESS \tBURST TIME \t WAITING TIME\t TURNAROUND TIME\n");
for(i=0;i<n;i++)
printf("\n\t P%d \t\t %d \t\t %d \t\t %d", p[i], bt[i], wt[i], tat[i]);
printf("\nAverage Waiting Time--%f", wtavg/n);
printf("\nAverage Turnaround Time--%f", tatavg/n);
getch();
}
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