// This program allows a user to input ten numbers and then finds the 
// largest number out of these. 
// Revisiting 1D arrays
// Sasha Vassar Week 4, Lecture 7



// Problem: A user is asked to enter 10 positive numbers. We will then go through these 
// numbers and find the highest number and output what the highest number is 
// to the user.  

#include <stdio.h> 

int highest(int numbers[10]);

int main (void) {

    //1. Take numbers in from the user - scanf
    int numbers[10] = {0}; // {0,0,0,0,0,0,0,0,0,0}
    
    int i = 0;
    while (i < 10) {
        printf("Please enter a number: ");
        scanf("%d", &numbers[i]);
        i++;
    }
    
    //int highest_number = highest(numbers);
    
    // Find the highest number    
    printf("The highest number is: %d\n", highest(numbers));

    return 0;
}

// Function finds the highest number in an arrays
// Input to function: number 
// Output to function: int 
int highest(int numbers[10]) {

    int highest_number = -1;
    
    int i = 0;
    while (i < 10) {
        if (numbers[i] > highest_number) {
            highest_number = numbers[i];
        }
        i++;
    }
    
    return highest_number;
}