sjf_norm.cpp

来自「This program sorts words in a line of te」· C++ 代码 · 共 48 行

#include <iostream.h>
#include <conio.h>
void main()
{
	clrscr();
	int bt[10][2];
	int i=0,j,k,l;
	float avg;
	int sum=0;
	int temp,temp1;
	char choice;
	for(l=0;l<10;l++)
			bt[l][1]=l+1;
	cout<<"\n\n\t\tShortest Job First (Non-Preemptive) Scheduling Algorithm";
	do
	{
		cout<<"\nEnter burst time for Process "<<i+1<<" : ";
		cin>>bt[i][0];
		cout<<"Want to continue (Y/N)? : ";
		cin>>choice;
		i++;
	}while(choice=='y'||choice=='Y');
	for(j=0;j<i-1;j++)
	{
		for(k=0;k<i-1-j;k++)
		{
			if(bt[k][0]>bt[k+1][0])
			{
				temp=bt[k][0];
				temp1=bt[k][1];
				bt[k][0]=bt[k+1][0];
				bt[k][1]=bt[k+1][1];
				bt[k+1][0]=temp;
            bt[k+1][1]=temp1;
			}

		}
	}
	cout<<"Process execution sequence :: ";
	for(j=0;j<i;j++)
	{  cout<<"\nProcess "<<bt[j][1]<<" Executing.";
		for(k=0;k<j;k++)
			sum=sum+bt[k][0];
	}
	avg=((float)sum)/i;
	cout<<"\n\n\t\tAverage waiting time is :: "<<avg;
	getch();
}