// Pantea Aria

// 1D array and functions recap
// read size of the array from user

// write functions to 
    // read size integer to an array of int
    // print out all data of the arrays
    // find the maximum and return to main


#include <stdio.h>
void input(int size, int numbers[]);
int maximum(int size, int numbers[]);
void output(int size, int numbers[]);
int main(void) {

    // declare the array of size
    int size;
    printf ("Enter size of the array:");
    scanf ("%d", &size);
    printf ("The value of size is: %d", size);
    
    int numbers[size];
    // call function input to read size integer to an array of int
    input(size, numbers);

    // call output to print out all data of the arrays
    output(size, numbers);
    // find the maximum and return to main
    // call a non void function inside printf
    printf("The maximum of all is %d\n", maximum(size, numbers));

    return 0;
}    
void input(int size, int numbers[]){
    int i = 0;
    printf ("Enter %d integers:", size);
    while(i < size) {
        scanf("%d", &numbers[i]);
        i++;
    }
    return;
}
void output(int size, int numbers[]){
    int i = 0;
    printf ("All elements are:");
    while(i < size) {
        printf("%d ", numbers[i]);
        i++;
    }
    printf ("\n");
    return;
}
int maximum(int size, int numbers[]) {

    int max = numbers[0];
    // then go the whole array
    // and compare all other elements with max
    int i = 0;
    while (i < size) {
        if (max < numbers[i]) {
            max = numbers[i];
        }
        i++;
    }
    return max;
}