ordine crescente di numeri indefiniti in c++

Here is an example of how to write a C++ program to sort an array of indefinite numbers in ascending order:

#include <iostream>
#include <algorithm>

int main() {
    int size;
    std::cout << "Enter the size of the array: ";
    std::cin >> size;

    int* arr = new int[size];
    std::cout << "Enter the elements of the array: ";
    for (int i = 0; i < size; i++) {
        std::cin >> arr[i];
    }

    std::sort(arr, arr + size);

    std::cout << "Sorted array in ascending order: ";
    for (int i = 0; i < size; i++) {
        std::cout << arr[i] << " ";
    }

    delete[] arr;

    return 0;
}

Explanation for each step:

1. Include the necessary header files: iostream for input/output operations and algorithm for sorting the array.
2. Define the main() function, which is the entry point of the program.
3. Declare a variable size to store the size of the array.
4. Prompt the user to enter the size of the array and read the input using std::cin.
5. Dynamically allocate an array of integers using the new keyword and assign it to the pointer variable arr.
6. Prompt the user to enter the elements of the array and read the input using a for loop.
7. Use the std::sort() function to sort the array in ascending order. This function takes two pointers as arguments: the starting and ending addresses of the array.
8. Print the sorted array in ascending order using a for loop.
9. Deallocate the memory allocated for the array using the delete[] operator to prevent memory leaks.
10. Return 0 to indicate successful program execution.

This program prompts the user to enter the size of the array and the elements of the array, sorts the array in ascending order using the std::sort() function, and then prints the sorted array.