////////////////////////////////
//
// prog_practice_7 project
//
// 9/21/22 tj
//
// practice programming with arrays
//
//////////////////////////////
#include "mbed.h"
#include <stdio.h>

void print_ary(const int the_ary[], int n);
void load_ary(int an_ary[], int n);
void load_ary2(int an_ary[], int n);
void copy_ary(int src_ary[], int dest_ary[], int n);
void swap_ary(int the_ary[], int n);

int main(void){
    setbuf(stdout, NULL); // fix buffer problem

    // splash - no function to save time
    printf("\n\nArray program\n\n");

    int ary1[10];
    int ary2[10] = {5,7,9,1,3,6,8,2,4,0};

    // print garbage
    print_ary(ary1, 10);
    // print initialized array
    print_ary(ary2, 10);

    // print some random locations
    // note last value is actuall out of range
    printf("%i %i %i\n", ary2[3], ary2[6], ary2[10]);

    // set some random locations
    ary2[5] = 99;
    ary2[7] = 66;
    print_ary(ary2, 10);

    // load values into an array
    load_ary(ary1, 10);
    print_ary(ary1, 10);

    // load values into an array
    load_ary2(ary1, 10);
    print_ary(ary1, 10);

    // copy the array
    copy_ary(ary1, ary2, 10);
    print_ary(ary1, 10);
    print_ary(ary2, 10);

    // do swap on an array
    swap_ary(ary1, 10);
    print_ary(ary1, 10);

    return 0;
}// end main

void print_ary(const int the_ary[], int n){
    // use const to indicate it is not your intention to modify the array
    int i;
    for(i = 0; i < n; i++)
        printf("%i ", the_ary[i]);
    printf("\n");

    return;
}// end print_ary

void load_ary(int an_ary[], int n){
    int i;
    for(i = 0; i < n; i++){
        printf("enter value %i for the array: ", i);
        scanf("%i", &an_ary[i]);
    }

    return;
}// end load_ary

void load_ary2(int an_ary[], int n){
    int i;
    printf("enter value %i values for the array: ", n);
    for(i = 0; i < n; i++){
        scanf("%i", &an_ary[i]);
    }

    return;
}// end load_ary

void copy_ary(int src_ary[], int dest_ary[], int n){
    int i;
    for(i = 0; i < n; i++){
        dest_ary[i] = src_ary[i];
    }

    return;
}// end copy_ary

void swap_ary(int the_ary[], int n){
    int i;
    int tmp_ary[n];

    copy_ary(the_ary, tmp_ary, n);

    for(i = 0; i < n; i++)
        the_ary[i] = tmp_ary[(n - 1) - i];

    return;
}// end swap_ary