#include <iostream>
using namespace std;
void Nhap(float[],int);
void Xuat(float[],int);
void Cau4(float[],int);
void Cau5(float[],int);
int main()
{
int n;
cout<<"n = ";
cin>>n;
float *a = new float[n];
Nhap(a,n);
cout<<"Cau 3 :"<<endl;
Xuat(a,n);
cout<<"Cau 4 :"<<endl;
Cau4(a,n);
cout<<"Cau 5 :"<<endl;
Cau5(a,n);
delete[] a;
return 0;
}
void Nhap(float a[],int n)
{
for(int i =0; i < n; ++i)
{
cout<<"a["<<i<<"] = ";
cin>>a[i];
}
}
void Xuat(float a[],int n)
{
for(int i =0; i < n; ++i)
{
cout<<a[i]<<"\t";
}
cout<<endl;
}
void Cau4(float a[],int n)
{
for(int i =0; i < n; ++i)
{
if(a[i] > 0)
{
cout<<a[i]<<"\t";
}
}
cout<<endl;
}
void Cau5(float a[],int n)
{
float Sum = 0;
int count = 0;
for(int i =0; i < n; ++i)
{
if(a[i] > 0)
{
Sum +=a[i];
count++;
}
}
cout<<"Trung binh cong cac so duong : "<<Sum/count<<endl;
}