SJF

#include<stdio.h>

#include<conio.h>

#define max 30

void main()

{

Int i,j,n,t,p[max],bt[max],wt[max],tat[max],Total_wt=0,Total_tat=0;

float awt=0,atat=0;

printf("Enter the number of processes\n");

scanf("%d",&n);

//Enter the processes according to their arrival times

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

{

printf("Enter the process number\n");

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

printf("Enter the burst time of the process\n");

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

}

//Apply the bubble sort technique to sort the processes according to their burst times

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

{

	for(j=0;j<n-i-1;j++)

	{

		if(bt[j]>bt[j+1])

		{

// Sort according to the burst times

		t=bt[j];

		bt[j]=bt[j+1];

		bt[j+1]=t;

		//Sorting Process Numbers

		t=p[j];

		p[j]=p[j+1];

		p[j+1]=t;

		}

	}

}

printf("Process\t Burst Time\t Waiting Time\t Turn Around Time\n");

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

{

	wt[i]=0;

	tat[i]=0;

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

		wt[i]=wt[i]+bt[j];

	tat[i]=wt[i]+bt[i];

	Total_wt=Total_wt +wt[i];

	Total_tat=Total_tat+tat[i];

	printf("%d\t %d\t\t %d\t\t %d\n",p[i],bt[i],wt[i],tat[i]);

}

awt=(float)Total_wt /n;

atat=(float)Total_tat /n;

printf("The average waiting time =  %f\n",awt);

printf("The average turn aroud time = %f\n",atat);

}