getting N number from user and find the biggest [duplicate] - c++

Question

This question already has answers here:
How to find Maximum value from 5 inputs by user? [closed]
(4 answers)
Closed 2 years ago.
I'm writing my first code in c++.
I want recieve in N number from user and find the biggest one.
I just have learnt itteration,if statement...(no list)
Please give me some guidance

Answer 1

If you like to learn C++, I suggest you directly start using the standard library (stl), its containers (such as std::vector) and its algorithm (in this case std::max_element).
A range based loop is not as good as a proper algorithm, but still better than a hand crafted index based loop.
Please refer to the Book "A tour of C++" by Stroustrup. He summarizes how C++ is meant to be used now.
Here is the code:
#include <vector>
#include <limits>
#include <algorithm>
#include <iostream>
int main() {
std::vector<int> arr;
const int N = 10;
for (int i = 0; i<N; i++) {
int value;
std::cin >> value;
arr.push_back(value);
}
const auto max_algorithm = std::max_element(arr.begin(), arr.end());
std::cout << "Largest is: " << *max_algorithm << std::endl;
auto max_range_based_loop = std::numeric_limits<int>::lowest();
for (const auto& item : arr) {
max_range_based_loop = std::max(item, max_range_based_loop );
}
std::cout << "Largest is: " << max_range_based_loop << std::endl;
return 0;
}

Answer 2

Initialize int max = INT_MIN.
While taking user input in an array, check if each input element is greater than max,
If greater, update max value.
when loop terminates return max.
Example:
int main()
{
int N = 10; // N is array size
int arr[N]; // Array declaration
int max = INT_MIN;
for(int i=0; i<N; i++)
{
cin>>arr[i]; // user input
if(arr[i]>max) //check each element if it's greater than max
{
max = arr[i];
}
}
cout<<"Largest is: "<<max<<endl; // print max Or return it in a method
return 0;
}