Write a program to implement the FCFS scheduling algorithm (Assignmet-6).

Q2) 2. Write a program to implement the FCFS scheduling algorithm.

Test case:

Input:

No of processes: 4

Burst time: 4 9 8 3

Arrival Time: 0 2 4 3

Code:

#include<stdio.h>

void main()

{

int n,a[10],b[10],t[10],w[10],g[10],i,m;

float att=0,awt=0;

for(i=0;i<10;i++)

{

a[i]=0; b[i]=0; w[i]=0; g[i]=0;

}

printf("enter the number of process : ");

scanf("%d",&n);

printf("enter the burst times : ");

for(i=0;i<n;i++)

scanf("%d",&b[i]);

printf("\nenter the arrival times : ");

for(i=0;i<n;i++)

scanf("%d",&a[i]);

g[0]=0;

for(i=0;i<10;i++)

g[i+1]=g[i]+b[i];

for(i=0;i<n;i++)

{

w[i]=g[i]-a[i];

t[i]=g[i+1]-a[i];

awt=awt+w[i];

att=att+t[i];

}

awt =awt/n;

att=att/n;

printf("\n\tprocess\twaiting time\tturn arround time\n");

for(i=0;i<n;i++)

{

printf("\tp%d\t\t%d\t\t%d\n",i,w[i],t[i]);

}

printf("the average waiting time is %f\n",awt);

printf("the average turn around time is %f\n",att);

}

Output: