Hello All,
I am trying to simulate a scheduling algorithm.
I am getting "segmentation fault" as error.
I am pinpointing the line on which there is error.
Here is the code:
#include<iostream.h>
#include<stdio.h>
struct process
{
int pid, arrtime, srvtime, ftime, processor;
};
struct process p[2];
struct node
{
node *next;
process *proc;
};
int q;
node *first = NULL;
void insert0(process *a)
{
cout<<"Before\n";
if(first == NULL)
{
cout<<"if first == Null\n";
first->proc = a; ///////////////////////////////////// Here is the error
cout<<"after\n";
first->next = NULL;
}
else
{
node *temp = first;
while(temp->next != NULL)
{
temp = temp->next;
}
node *r;
r->next = NULL;
r->proc = a;
temp->next = r;
}
cout<<"first->proc->pid "<<first->proc->arrtime;
cout<<"first->proc->arrtime "<<first->proc->arrtime<<endl;
cout<<"first->next->proc->pid "<<first->proc->arrtime;
cout<<"first->next->proc->arrtime "<<first->proc->arrtime;
}
process * remove0()
{
}
int main()
{
cout<<"enter processes"<<endl;
for(int i = 0; i<2; i++)
{
cin>>p[i].pid;
}
cout<<"Enter their arrval time"<<endl;
for(int i = 0;i<2;i++)
{
cin>>p[i].arrtime;
}
for(int i = 0; i<2; i++)
{
insert0(&p[i]);
}
return 0;
}
Please tell me what is the mistake?
Thanks and Regards.
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