#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
float a[20],max,b,k; int n,i,vt,vtc;
printf("\n nhap n=");
scanf("%d",&n);
for(i=0;i<n;i++){
printf("\n a[%d]=",i);
scanf("%f",&a[i]);}
max=a[0];
for(i=0;i<=n;++i)
if(max<a[i])
{
max=a[i];
vt=i;
}printf("\n max=%f vi tri=%d",max,vt);
printf("\n nhap b ");
scanf("%f",&b);
for(i=0;i<n;++i)
if(b==a[i]){
vtc=i;printf("vi tri so trung voi b la%d",i);}
else printf("\n khong co so nao bang b");
getch();
}