#include <iostream>
using std::cout;
using std::cin;
using std::endl;
int main()
{
int a[20], b[20];
cout << "Array A. Enter 20 numbers: ";
for(int i = 0; i < 20; i++)
{
cin >> a[i];
}
cout << "Array B. Enter 20 numbers: ";
for(int i = 0; i < 20; i++)
{
cin >> b[i];
}
for(int i = 0; i < 20; i++)
{
if(a[i] % 2 == 0) //Если чётное
{
a[i] += a[i];
}
else
a[i] -= b[i];
}
for(int i = 0; i < 20; i++)
{
cout << a[i] << ' ';
}
cout << endl;
return 0;
}
#include <iostream>
using std::cout;
using std::cin;
using std::endl;
int main()
{
int number, counter = 0;
float average = 0;
cout << "Enter the number: ";
cin >> number;
//1)
for(int i = 0; i <= number; i++)
{
average += i;
}
average /= (number + 1);
//2)
for(int i = 0; i <= number; i++)
{
if(i % 2 == 0) //Если чётное
{
counter++;
}
}
cout << "Average = " << average << endl;
cout << "The amount of even elements: " << counter << endl;
return 0;
}
