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Thread: First come First served algorithm in C

  1. #1
    Senior Member suve's Avatar
    Join Date
    Jun 2012
    Posts
    417

    First come First served algorithm in C

    Hi all,

    Can anyone in the forum please help me what is the First come first served algorithm, Please give a sample example which will help me more....

    Thanks,
    Suve

  2. #2
    Senior Member Bandhavi's Avatar
    Join Date
    May 2012
    Posts
    152,677
    Hi suve ,
    Here I am trying to give a small example, Hope this will help you some extent
    /*Here is the Simplest program for schedulin policy is FCFS which is also known as
    FIFO or a strict queing scheme. */

    Code:
    #include <stdio.h>
    #include <Conio.h>
    int main ()
    {
    
        int i = 0, k = 0, b = 0, x[10], c = 0, s[10], a [10], r =0;
    
        float t = 0.0;
    
        printf ("Enter the number of Processes");
        scanf ("%d", &a[i]);
       for (i = 0; i<=r; i++)
       {
           printf ("Enter the process p %d", i);
           scanf ("%d", &a[i]);
    
           printf ("Enter the arrival time");
           scanf ("%d", &x[i]);
       }
       for (i = 1; i<=r; i++)
       {
    
           c = c+ a[i];
           s[i] = c;
           k = k + s[i] - x[i];
    
       }t = (float) k /r;
    
       printf ("turn around time:%f\n", t);
       b = t - s[r];
       t = (float) b / r;
       printf ("waiting time, %f\n", t);
       printf ("Response time,%f\n", t) ;
       getch ();
    
    return 0;
    }

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