round.cpp

#include <iostream>
using namespace std;
// #include<conio.h>
int main()
{
// initlialize the variable name
 int i, NOP, sum = 0, count = 0, y, quant, wt = 0, tat = 0, at[10], bt[10], temp[10];
 float avg_wt, avg_tat;
 cout<<" Total number of process in the system: ";
 cin>>NOP;
 y = NOP; // Assign the number of process to variable y
 // Use for loop to enter the details of the process like Arrival time and the Burst Time
 for (i = 0; i < NOP; i++)
 {
 cout<<"\n Enter the Arrival and Burst time of the Process"<< i + 1<<":";
 cin>>at[i];
 cin>>bt[i];
 temp[i] = bt[i]; // store the burst time in temp array
 }
 // Accept the Time qunat
 cout<<"Enter the Time Quantum for the process: ";
 cin>>quant;
 // Display the process No, burst time, Turn Around Time and the waiting time
 cout<<"\n Process No \t\t Burst Time \t\t TAT \t\t Waiting Time ";
 for (sum = 0, i = 0; y != 0;)
 {
 if (temp[i] <= quant && temp[i] > 0) // define the conditions
 {
 sum = sum + temp[i];
 temp[i] = 0;
 count = 1;
 }
 else if (temp[i] > 0)
 {
 temp[i] = temp[i] - quant;
 sum = sum + quant;
 }
 if (temp[i] == 0 && count == 1)
 {
 y--; // decrement the process no.
 cout<<"\nProcess No["<<i+1<<"] \t\t "<<bt[i]<<"\t\t\t "<<sum-at[i]<<"\t\t\t "<<sum - at[i] -
bt[i];
 wt = wt + sum - at[i] - bt[i];
 tat = tat + sum - at[i];
 count = 0;
 }
 if (i == NOP - 1)
 { 
	 i = 0;
 }
 else if (at[i + 1] <= sum)
 {
 i++;
 }
 else
 {
 i = 0;
 }
 }
 // represents the average waiting time and Turn Around time
 avg_wt = wt * 1.0 / NOP;
 avg_tat = tat * 1.0 / NOP;
 cout<<"\n Average Turn Around Time: "<<avg_wt;
 cout<<"\n Average Waiting Time: "<<avg_tat;
}