CPU Scheduling Algorithm : FCFS

#include<stdio.h>
#include<conio.h>
void main()
{
`char pn[10][10];
int arr[10],bur[10],star[10],finish[10],tat[10],wt[10],i,n;
int totwt=0,tottat=0;
clrscr();
printf("Enter the number of processes:");
scanf("%d",&n);
for(i=0;i<n;i++)
{
printf("Enter the Process Name, Arrival Time & Burst Time:");
scanf("%s%d%d",&pn[i],&arr[i],&bur[i]);
}
for(i=0;i<n;i++)
{
if(i==0)
{
star[i]=arr[i];
wt[i]=star[i]-arr[i];
finish[i]=star[i]+bur[i];
tat[i]=finish[i]-arr[i];
}
else
{
star[i]=finish[i-1];
wt[i]=star[i]-arr[i];
finish[i]=star[i]+bur[i];
tat[i]=finish[i]-arr[i];
}
}
printf("\nPName Arrtime Burtime Start TAT Finish");
for(i=0;i<n;i++)
{
printf("\n%s\t%6d\t\t%6d\t%6d\t%6d\t%6d",pn[i],arr[i],bur[i],star[i],tat[i],finish[i]);
totwt+=wt[i];
tottat+=tat[i];
}
printf("\nAverage Waiting time:%f",(float)totwt/n);
printf("\nAverage Turn Around Time:%f",(float)tottat/n);
getch();
}

Output