Переменные,значение функции,вспомогательные переменные.

#include <iostream>
using namespace std;
 
int main() {
    int a, b, c, tempa, tempb;
    cout << "Enter A, B, C :";
    cin >> a;
        tempa = a;
    cin >> b;
        tempb = b;
    cin >> c;
    cout << "A = " << a << "\tB = " << b << "\t C = " << c << endl;
    a = c;
    b = tempa;
    c = tempb;
    cout << "A = " << a << "\tB = " << b << "\t C = " << c;
    return 0;
}

#include <iostream>
#include <math.h>
using namespace std;
 
int main() {
    int x;
    cout << "Enter x : ";
    cin >> x;
    cout << "Result = " << 3*pow(x,6) - 6*pow(x,2) - 7 << endl;
    system("PAUSE");
    return 0;
}

#include <iostream>
 
using namespace std;
 
 
int main()
{
    int a,b,c,d;
   cout << "enter a ";
   cin >> a;
   cout << "enter b ";
   cin >> b;
   cout << "enter c ";
   cin >> c;
   
   d = a;
   a = c;
   c = b;
   b = d;
 
cout << "A = " << a << endl << "B = " << b << endl << "C = " << c << endl;
    return 0;
}

#include <iostream>
using namespace std;
int main()
{
    double a;
    cout << "Введите A -> ";
    cin >> a;
    double buf = a * a;
    cout << a << " ^ 2 = " << buf << endl;
    buf = buf * buf;
    cout << a << " ^ 4 = " << buf << endl;
    buf = buf * buf;
    cout << a << " ^ 8 = " << buf << endl;
    return 0;
}