sjf scheduling

Adithyasjf.c
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Aug 31

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Adithyasjf.c
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ADITHYA ANIL B.Tech CSE A 2017 - 2021
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C
Adithyasjf.c
#include <stdio.h>

int main()
{
    int n,i,j,bt[20],wt[20],twt,awt,temp;
    printf("Enter total number of processes: ");
    scanf("%d", &n);
    printf("Enter burst time for each process:\n");
    for(i=0; i<n; i++) 
    {
        printf("P[%d]: ", i+1);
        scanf("%d", &bt[i]);
    }
    
    //waiting time
    twt = 0;
    wt[0]= 0;
    for(i=0; i<n; i++) {
        wt[i+1] = wt[i]+bt[i];
        twt+= wt[i+1];
    }

    awt=twt/n;
    printf("Average waiting time = %d\n",awt);
	printf("Process\t\tBurst Time\t\tWaiting time\n");
    for(i=0; i<n; i++) 
    {
        printf("P[%d]\t\t ", i+1);
	printf("%d\t\t\t\t", bt[i]);
	printf("%d\n", wt[i]);
    }
 /*   printf("\nWaiting Time\n");
	for(i=0;i<n;i++)
		printf("%d\t", wt[i]);
	printf("\nBurst Time\n");
	for(i=0;i<n;i++)
		printf("%d\t", bt[i]);
    printf("Gantt Chart:\n");*/
	
    return 0;
}

/*
void print_gantt_chart(Process p[], int n)
{
    int i, j;
    int last = p[n-1].burst_time + ( n== 1 ? 0 : p[n-1].waiting_time);
    // printing top bar
    printf(" ");
    for(i=0; i<n; i++) {
        for(j=0; j<p[i].burst_time; j++) printf("--");
        printf(" ");
    }
    printf("\n|");
    // middle position
    for(i=0; i<n; i++) {
        for(j=0; j<p[i].burst_time-1; j++) printf(" ");
        printf("p%d", p[i].pid);
        for(j=0; j<p[i].burst_time-1; j++) printf(" ");
        printf("|");
    }
    printf("\n ");
    // bottom bar
    for(i=0; i<n; i++) {
        for(j=0; j<p[i].burst_time; j++) printf("--");
        printf(" ");
    }
    printf("\n");

    // printing waiting time
    int minus = 0;
    for(i=0; i<n; i++) {
        if(p[i].waiting_time>9) printf(" ");
        printf("%d", p[i].waiting_time);
        if(p[i+1].waiting_time>9){
          minus = 1;
        }
        if(i+1 == n )  if (last>9) minus = 1;
        for(j=0; j<p[i].burst_time-minus; j++) printf("  ");

    }
    if(last>9) printf(" ");
    printf("%d\n", last);
}*/