#include<stdio.h>
#include<conio.h>
void main()
{
char p[10][5],temp[5];
int i,j,pt[10],wt[10],totwt=0,pr[10],temp1,n;
float avgwt;
clrscr();
printf("enter no of processes:");
scanf("%d",&n);
for(i=0;i<n;i++)
{
printf("enter process%d name:",i+1);
scanf("%s",&p[i]);
printf("enter process time:");
scanf("%d",&pt[i]);
printf("enter priority:");
scanf("%d",&pr[i]);
}
for(i=0;i<n-1;i++)
{
for(j=i+1;j<n;j++)
{
if(pr[i]>pr[j])
{
temp1=pr[i];
pr[i]=pr[j];
pr[j]=temp1;
temp1=pt[i];
pt[i]=pt[j];
pt[j]=temp1;
strcpy(temp,p[i]);
strcpy(p[i],p[j]);
strcpy(p[j],temp);
}
}
}
wt[0]=0;
for(i=1;i<n;i++)
{
wt[i]=wt[i-1]+et[i-1];
totwt=totwt+wt[i];
}
avgwt=(float)totwt/n;
printf("p_name\t p_time\t priority\t w_time\n");
for(i=0;i<n;i++)
{
printf(" %s\t %d\t %d\t %d\n" ,p[i],pt[i],pr[i],wt[i]);
}
printf("total waiting time=%d\n avg waiting time=%f",tot,avg);
getch();
}
OUTPUT:
enter no of processes: 5
enter process1 name: aaa
enter process time: 4
enter priority:5
enter process2 name: bbb
enter process time: 3
enter priority:4
enter process3 name: ccc
enter process time: 2
enter priority:3
enter process4 name: ddd
enter process time: 5
enter priority:2
enter process5 name: eee
enter process time: 1
enter priority:1
p_name P_time priority w_time
eee 1 1 0
ddd 5 2 1
ccc 2 3 6
bbb 3 4 8
aaa 4 5 11
total waiting time=26
avg waiting time=5.20
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