c++ task

1.

#include <iostream>
#include <cstdlib>
using namespace std;

int age;
int aver, a,b;

int avr(int age)
{
    a = age / 10;
    b = age % 10;
    aver = (a + b) / 2;
    return aver;
}


int main()
{
    setlocale(LC_ALL, "Russian");
    cout << "Введите возраст: ";
    cin >> age;
    aver = avr(age);
    cout << endl << "Сред. Арифм:" << aver << endl;

    system("pause");
    return 0;
}

2.

#include <iostream>
#include <cstdlib>
using namespace std;

int a,b;

int max(int a, int b)
{
    if (a > b)
        return a;
    else
        return b;
}


int main()
{
    setlocale(LC_ALL, "Russian");
    cout << "Введите 2 числа: ";
    cin >> a >> b;
    cout << endl << max(a,b) << endl;

    system("pause");
    return 0;
}

3.

#include <iostream>
#include <cstdlib>
using namespace std;

int input,a,b;

int obr(int input)
{
    a = input / 10;
    b = input % 10;
    return b * 10 + a;

}


int main()
{
    setlocale(LC_ALL, "Russian");
    cout << "Введите число: ";
    cin >> input;
    cout << endl << obr(input) << endl;

    system("pause");
    return 0;
}

4.

#include <iostream>
#include <cstdlib>
using namespace std;

int a, b;
int i = 0;
string input;
const char* glas = "AaEeIiOoUuYy";

string obr(string input)
{
    for (int i = 0; i < 12; i++)
        if (input[0] == glas[i])
        {
       return "гласная";
        }
    else
        return "не гласная";




}


int main()
{
    setlocale(LC_ALL, "Russian");
    cin >> input;

    cout << endl << obr(input) << endl;

    system("pause");
    return 0;
}