Question

Start with a program that allows the user to input a number of integers, and then stores
them in an int array. Write a function called maxint() that goes through the array,
element by element, looking for the largest one. The function should take as arguments
the address of the array and the number of elements in it, and return the index number of
the largest element. The program should call this function and then display the largest
element and its index number.

Answer 1

#include <iostream>

using namespace std;

int maxint(int* arr, int length) {
    int mx = arr[0], ind = 0;
    for (int i = 0; i < length; i++) {
        if (mx<arr[i]) {
            ind = i;
            mx = arr[i];
        }
    }
    return ind;
}


int main()
{
    int n;
    cout << "Number of elements in array: ";
    cin >> n;
    int foo[n];
    cout << "Input the elements of the array:\n";
    for (int i = 0; i < n; i++) {
        cin >> foo[i];
    }
    int ans = maxint(foo, n);
    cout << "The maximum element of array: " << foo[ans] << '\n';
    cout << "The index of the maximum element: " << ans << '\n';


    return 0;
}
Example:

Number of elements in array: 4
Input the elements of the array:
1
2
3
4
The maximum element of array: 4
The index of the maximum element: 3