sjf non preemitive

#include<stdio.h>
#include<stdlib.h>

typedef struct process
{
    char name[5];
    int bt;
    int at;
    int prt;
    int wt,ta;
    int flag;
} processes;

int main()
{
    processes P[10];
    int i,n;
    printf("\n Enter total no. of processes : ");
    scanf("%d",&n);
    for(i=0; i<n; i++)
    {
        printf("\n PROCESS [%d]",i+1);
        printf(" Enter process name : ");
        scanf("%s",&P[i].name);
        printf(" Enter burst time : ");
        scanf("%d",&P[i].bt);
        printf(" Enter arrival time : ");
        scanf("%d",&P[i].at);
       // printf(" Enter priority : ");
        //scanf("%d",&P[i].prt);
    }
    printf("\n PROC.\tB.T.\tA.T.\tPRIORITY");
    for(i=0; i<n; i++)
        printf("\n %s\t%d\t%d\t%d",P[i].name,P[i].bt,P[i].at,P[i].prt);

    /*processes t;
    int j,temp[20];
    for(i=1;i<n;i++)
    	for(j=0;j<n-i;j++){
    		if(temp[j].at > temp[j+1].at){
    			t = temp[j];
    			temp[j] = temp[j+1];
    			temp[j+1] = t;
    		}
    	}
    */
    processes temp[10];
    processes t;
    int sumw=0,sumt=0;
    int x = 0;
    float avgwt=0.0,avgta=0.0;
    int j;

    for(i=0; i<n; i++)
        temp[i]=P[i];
    for(i=1; i<n; i++)
        for(j=0; j<n-i; j++)
        {
            if(temp[j].at > temp[j+1].at)
            {
                t = temp[j];
                temp[j] = temp[j+1];
                temp[j+1] = t;
            }
        }

    for(i=2; i<n; i++)
        for(j=1; j<n-i+1; j++)
        {
            if(temp[j].bt > temp[j+1].bt)
            {
                t = temp[j];
                temp[j] = temp[j+1];
                temp[j+1] = t;
            }
        }

    printf("\n\n PROC.\tB.T.\tA.T.");
    for(i=0; i<n; i++)
        printf("\n %s\t%d\t%d",temp[i].name,temp[i].bt,temp[i].at);

    sumw = temp[0].wt = 0;
    sumt = temp[0].ta = temp[0].bt - temp[0].at;

    for(i=1; i<n; i++)
    {
        temp[i].wt = (temp[i-1].bt + temp[i-1].at + temp[i-1].wt) - temp[i].at;;
        temp[i].ta = (temp[i].wt + temp[i].bt);
        sumw+=temp[i].wt;
        sumt+=temp[i].ta;
    }
    avgwt = (float)sumw/n;
    avgta = (float)sumt/n;
    printf("\n\n PROC.\tB.T.\tA.T.\tW.T\tT.A.T");
    for(i=0; i<n; i++)
        printf("\n %s\t%d\t%d\t%d\t%d",temp[i].name,temp[i].bt,temp[i].at,temp[i].wt,temp[i].ta);

    printf("\n\n GANTT CHART\n ");
    for(i=0; i<n; i++)
        printf("   %s   ",temp[i].name);
    printf("\n ");

    printf("0\t");
    for(i=1; i<=n; i++)
    {
        x+=temp[i-1].bt;
        printf("%d      ",x);
    }
    printf("\n\n Average waiting time = %0.2f\n Average turn-around = %0.2f.",avgwt,avgta);

    return 0;
}