Final Codes_MY_OS_LAB
#include <iostream>
using namespace std;
struct sjrf
{
int pid;
int at;
int bt;
int tt;
int wt;
}processes[10];
int n;
int totalBrust();
int Minimum(int max);
void sort(); // if user not enter processes value in sorted order w.r.t arival time
void Display()
{
printf("%-15s\t%-15s\t%-15s\t%-15s\t%-15s\n","PID","Arival Time","Brust Time","Terminate Time","Waiting Time");
for (int i = 0; i < n; ++i) {
printf("%-15d\t%-15d\t%-15d\t%-15d\t%-15d\n",processes[i].pid,processes[i].at,processes[i].bt,processes[i].tt,processes[i].wt);
}
}
int final;
int main() {
cout<<"Enter number of processes : ";
cin >>n;
int temp[n];
for (int i = 0; i < n; ++i) {
processes[i].pid =i;
cout<<"Enter Arival and brust tiem of process "<<i<<" : ";
cin>>processes[i].at>>processes[i].bt;
temp[i] = processes[i].bt;
}
Display();
int p=0;
int current =0;
final = totalBrust();
for (int j = 0; j <final; ++j) {
if(processes[p].at ==j)
{
p++;
current = Minimum(p);
}
processes[current].bt--;
if(processes[current].bt == 0)
{
processes[current].tt = j+1;
current = Minimum(p);
}
}
int totalWT=0;
for (int k = 0; k < n; ++k) {
processes[k].bt = temp[k];
processes[k].wt = processes[k].tt - processes[k].bt - processes[k].at;
totalWT = totalWT + processes[k].wt;
}
Display();
cout<<"Total Waiting Time : "<<(totalWT /(float)n);
}
int Minimum(int max)
{
int min=0;
int temp = final;
for (int i = 0; i < max; ++i) {
if(processes[i].bt !=0 && processes[i].bt < temp)
{
min = i;
temp = processes[min].bt;
}
}
return min;
}
int totalBrust()
{
int s=0;
for (int i = 0; i <n ; ++i) {
s += processes[i].bt;
}
return s;
}
// #include <iostream>
// using namespace std;
// struct Priority
// {
// int pid;
// int at;
// int bt;
// int pty;
// int tt;
// int wt;
// }processes[10];
// int n;
// int totalBrust();
// int Minimum(int max);
// void Display()
// {
// printf("%-15s\t%-15s\t%-15s\t%-15s\t%-15s\t%-15s\n","PID","Arival Time","Brust Time","Priority","Terminate Time","Waiting Time");
// for (int i = 0; i < n; ++i) {
// printf("%-15d\t%-15d\t%-15d\t%-15d\t%-15d\t%-15d\n",processes[i].pid,processes[i].at,processes[i].bt,processes[i].pty,processes[i].tt,processes[i].wt);
// }
// }
// int final;
// int main() {
// cout<<"Enter number of processes : ";
// cin >>n;
// int temp[n];
// for (int i = 0; i < n; ++i) {
// processes[i].pid =i;
// cout<<"Enter Arival Brust and priority of process "<<i<<" : ";
// cin>>processes[i].at>>processes[i].bt>>processes[i].pty;
// temp[i] = processes[i].bt;
// }
// Display();
// int p=0;
// int current =0;
// final = totalBrust();
// for (int j = 0; j <final; ++j) {
// if(processes[p].at ==j)
// {
// p++;
// current = Minimum(p);
// }
// processes[current].bt--;
// if(processes[current].bt == 0)
// {
// processes[current].tt = j+1;
// current = Minimum(p);
// }
// }
// int totalWT=0;
// for (int k = 0; k < n; ++k) {
// processes[k].bt = temp[k];
// processes[k].wt = processes[k].tt - processes[k].bt - processes[k].at;
// totalWT = totalWT + processes[k].wt;
// }
// Display();
// cout<<"Total Waiting Time : "<<(totalWT /(float)n);
// }
// int Minimum(int max)
// {
// int min=0;
// int temp = final;
// for (int i = 0; i < max; ++i) {
// if(processes[i].bt !=0 && processes[i].pty < temp)
// {
// min = i;
// temp = processes[min].pty;
// }
// }
// return min;
// }
// int totalBrust()
// {
// int s=0;
// for (int i = 0; i <n ; ++i) {
// s += processes[i].bt;
// }
// return s;
// }
Important Impala