aoa p1

#include<stdio.h>
#include<time.h>
#include<stdlib.h>
void bubblesort(int a[100000],int n)
{
    int i,j,temp;
    for(i=0;i<n-1;i++)
    {
        for(j=0;j<n-1;j++)
        {
            if(a[j]>a[j+1])
             {
                temp = a[j];
                a[j] = a[j+1];
                a[j+1] = temp;
            }
        }
    }
    return;
}
void insertsort(int c[100000],int n)
{
    int i,j,temp;
     for(i=1;i<n;i++)
    {
      temp=c[i];
      j=i-1;
      while((temp<c[j])&&(j>=0))
        {
            c[j+1]=c[j];
            j=j-1;
        }
      c[j+1]=temp;
    }
}
void selectsort(int b[100000],int n)
{
    int i,j,min,pos;
    for(i=0;i<n-1;i++)
    {
        min = b[i];
        pos = i;
        for(j=i+1;j<n;j++)
        {
            if(b[j]<min)
            {
                min = b[j];
                pos = j;
            }
        }
        b[pos] = b[i];
        b[i] = min;
    }
}
int  main()
{
    int nextrand,n,a[100000],b[100000],c[100000],i;
    clock_t bubbletime1,bubbletime2,inserttime1,inserttime2,selecttime1,selecttime2;
    double bubbletime,inserttime,selecttime;
    FILE *fp;
    fp = fopen("C:/data.txt","w");
    printf("Enter the size of array  ");
    scanf("%d",&n);
    for(i=0;i<n;i++)
    {
        nextrand = rand();
        nextrand = nextrand%1000;
        fprintf(fp,"%d",nextrand);
    }
    fclose(fp);
    fp = fopen("C:/data.txt","r");
    for(i=0;i<n;i++)
        fscanf(fp,"%d",&a[i]);
    for(i=0;i<n;i++)
    {
        c[i] = a[i];
        b[i] = a[i];
    }
    bubbletime1 = clock();
    bubblesort(a,n);
    bubbletime2 = clock();
    selecttime1 = clock();
    selectsort(b,n);
    selecttime2 = clock();
    inserttime1 = clock();
    insertsort(c,n);
    inserttime2 = clock();
    bubbletime = (double) (bubbletime2 - bubbletime1)/CLOCKS_PER_SEC;
    selecttime = (double) (selecttime2 - selecttime1)/CLOCKS_PER_SEC;
    inserttime = (float) (inserttime2 - inserttime1)/CLOCKS_PER_SEC;
    printf("\ntime taken by bubble sort is %f",bubbletime);
    printf("\ntime taken by selection sort is %f",selecttime);
    printf("\ntime taken by insertion sort is %f",inserttime);
    fclose(fp);
    return 0;
}