SchoolHW №1

Задача 1)
#include <iostream>
using namespace std;

int main() {
    int n;
    cin >> n;

    for (int i = 1; i <= n; i++){
        cout << i << endl;
    }
  return 0;
}
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Задача 2)
#include <iostream>
using namespace std;

int main()
{
    cout << "Dec   Char" << endl;
    for (int i = 0; i <= 127; i++){
        cout << i << "   = " << char(i) << endl;
    }
}
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Задача 3)
#include <iostream>
using namespace std;

int main()
{
    int n;
    cout << "Number: ";
    cin >> n;

    for (int i = 1; i < n; i++) {
        if (i % 2 == 0){
            cout << i << endl;
        }
    }
}
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Задача 4)
#include <iostream>
using namespace std;

int main() {
    int a, b;
    cin >> a;
    cin >> b;

    for (a; a <= b; a++){
        cout << a << endl;
    }
  return 0;
}
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Задача 5)
#include <iostream>
using namespace std;

int main() {
    int a, b, x;
    cin >> a;
    cin >> b;
    cin >> x;

    for (a; a <= b; a++){
        if (a % x == 0){
            cout << a << endl;
        }
    }
  return 0;
}
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Задача 6)
#include <iostream>
#include <string>
#include <cmath>
using namespace std;

int main() {
    int n, sum_of_nums;

    cout << "Number n: ";
    cin >> n;

    sum_of_nums = 0;

    for (int i = 1; i <= n; i++){
        sum_of_nums += i;
    }

    cout << "Sum of all numbers: " << sum_of_nums;
    return 0;
}
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Задача 7)
#include <iostream>
#include <string>
#include <cmath>
using namespace std;

int main() {
    int n, mul_of_nums;

    cout << "Number n: ";
    cin >> n;

    mul_of_nums = 1;

    for (int i = 1; i <= n; i++){

        mul_of_nums *= i;
    }

    cout << "Multiplication of all numbers: "<< mul_of_nums;
    return 0;
}
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Задача 8)
#include <iostream>
#include <string>
#include <cmath>
#include <bits/stdc++.h>
using namespace std;

int main() {
    int n, num, sum_of_numbers, mul_of_numbers;
    list <int> numbers;

    cout << "Enter numbers count: ";
    cin >> n;

    for (int i = 0; i < n; i++){
        cin >> num;
        numbers.push_back(num);
    }

    sum_of_numbers = accumulate(numbers.begin(), numbers.end(), 0);
    mul_of_numbers = accumulate(numbers.begin(), numbers.end(), 1, multiplies<int>());
    cout << "\nSum = " << sum_of_numbers << endl;
    cout << "Multiplication = " << mul_of_numbers;

    return 0;
}
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Задача 9)
#include <iostream>
#include <string>
#include <cmath>
#include <iostream>

using namespace std;
int main()
{
    int array[50];
    int i, max, min, size, positive_count;

    cout<<"Enter size of the array: ";
    cin>>size;

    cout<<"\nEnter "<<size <<" elements in the array: " << endl;
    for(i=0; i<size; i++)
        cin>>array[i];

    max = array[0];
    min = array[0];
    positive_count = 0;

    for(i=1; i<size; i++) {
        if(array[i] > 0)
            positive_count += 1;

        if(array[i] > max)
            max = array[i];

        if(array[i] < min)
            min = array[i];
    }

    cout << "\nMaximum element: " << max << endl;
    cout << "Minimum element: " << min << endl;
    cout << "Positve numbers count: " << positive_count;
    return 0;

}