C

#include "stdio.h"
#include "conio.h"
main()
{
int i,n,vtmax,vtmin;
float a[100],max,min;
printf("Nhap so phan tu cua day so: ");
scanf("%d",&n);
if (n>0)
{
    for (i=0;i<n;i++)
    {
        printf("\nNhap phan tu thu a[%d]: ",i);
        scanf("%f",&a[i]);
    }
    max = a[0];
    min = a[0];
    for (i=0;i<n;i++)
    {
        if (max < a[i]) max = a[i];
        if (min > a[i]) min = a[i];
    }
    printf("\nSo lon nhat trong day la: %f, o vi tri ",max);
    for (i=0;i<n;i++)
        if (a[i] == max) printf("%4d",i);
    printf("\nSo nho nhat trong day la: %f, o vi tri ",min);
    for (i=0;i<n;i++)
        if (a[i] == min) printf("%4d",i);
}
else printf("Ban phai nhap so nguyen duong!");
getch();
return 0;
}