EXP-1(a)FCFS.c

#include <stdio.h>
#include <conio.h>

int main() {
    int bt[20], wt[20], tat[20], i, n;
    float wtavg = 0, tatavg = 0;

    printf("Enter the number of processes: ");
    scanf("%d", &n);

    for (i = 0; i < n; i++) {
        printf("Enter Burst Time for Process %d: ", i);
        scanf("%d", &bt[i]);
    }

    wt[0] = 0;
    tat[0] = bt[0];

    for (i = 1; i < n; i++) {
        wt[i] = wt[i - 1] + bt[i - 1];
        tat[i] = wt[i] + bt[i];
    }

    for (i = 0; i < n; i++) {
        wtavg += wt[i];
        tatavg += tat[i];
    }

    wtavg /= n;
    tatavg /= n;

    printf("\nPROCESS\tBURST TIME\tWAITING TIME\tTURNAROUND TIME\n");

    for (i = 0; i < n; i++) {
        printf("P%d\t\t%d\t\t%d\t\t%d\n", i, bt[i], wt[i], tat[i]);
    }

    printf("\nAverage Waiting Time -- %f", wtavg);
    printf("\nAverage Turnaround Time -- %f", tatavg);

    getch();
    return 0;
}