cscan.c

#include<stdio.h>
main()
{
int t[20], d[20], h, i, j, n, temp, k, atr[20], tot, p, sum=0;
printf("enter the no of tracks to be traversed");
scanf("%d'",&n);
printf("enter the position of head");
scanf("%d",&h);
t[0]=0;t[1]=h;
printf("enter total tracks");
scanf("%d",&tot);
t[2]=tot-1;
printf("enter the tracks");
for(i=3;i<=n+2;i++)
scanf("%d",&t[i]);
for(i=0;i<=n+2;i++)
for(j=0;j<=(n+2)-i-1;j++)
if(t[j]>t[j+1])
{
temp=t[j];
t[j]=t[j+1];
t[j+1]=temp
}
for(i=0;i<=n+2;i++)
if(t[i]==h)
j=i;
break ;
p=0;
while(t[j]!=tot-1)
{
atr[p]=t[j];
j++;
p++;
}
atr[p]=t[j];
p++;
i=0;
while(p!=(n+3) && t[i]!=t[h])
{
atr[p]=t[i]; i++;
p++;
}
for(j=0;j<n+2;j++)
{
if(atr[j]>atr[j+1])
d[j]=atr[j]-atr[j+1];
else
d[j]=atr[j+1]-atr[j];
sum+=d[j];
}
printf("total header movements%d",sum);
printf("avg is %f",(float)sum/n);
}