#include <iostream>
using namespace std;
#include <iomanip> 
#include <algorithm>
 
int main()
{
	int i,num[20],sec[20],j,choice;
 
 
	cout<< "Please enter 20 integers";
	for (i=0; i<20; i++)
 
	{
		cout<<"\nEnter next value:";
		cin>>num[i];
 
	}
 
 
 
		cout<<"\n1.Display original data.\n";
		cout<<"2.Sort the data into descending order\n";
		cout<<"3.Display the sorted data (Only if you've already sorted)\n";
		cout<<"4.Get the address of the first element of array.\n\n";
		cin>>choice;
 
	if (choice==1){
 
		for (i=0; i<20; i++){
			cout<<"\n"<<num[i]<<endl;		
		}
	if (choice==2){
{
			int i,temp,thing;
 
			for(i=0; i < i-1; i++)
			{
				thing= i;
				for (j=i+1; j<i; j++)
				{ 
					if (num[j] < num[thing])
						thing=j;
				}
						temp = num[i];
						num[i]= num[j];
						num[j] = temp;
						cout<<"Here are your numbers:"<<temp<<endl;
			} }}}}

 int i,temp,thing;

#include <iostream>
using namespace std;
 
unsigned int menu();
 
int main() {
	for (;;) {
		switch (menu()) {
		case 0:
			return 0;
		case 1:
			//some function to dispaly input
			break;
		case 2:
			//some function to sort
			break;
		case 3:
			//some function to show array
			break;
		case 4:
			//some function to show adress of 1st el.
			break;
		}
	}
	return 0;
}
 
unsigned int menu() {
	unsigned int c = -1;
	while (c > 4) {
		cout <<"<0> Exit\n"
			"<1> Display their input\n"
			"<2> Sort the array\n"
			"<3> Show the sorted array\n"
			"<4> Show the address of the first element\n";
 
		cin >> c;
		if (c > 4) {
			cout << "Try again\n";
		}
	}
	return c;
}

void bubble_sort() {
	bool isChange = true;
	while (isChange) {
		isChange = false;
		for (int i = 0; i < size_of_array-1; ++i) {
			if (array[i] > array[i+1]) {
				array[i] ^= array[i+1] ^= array[i] ^= array[i+1];
				isChange = true;
			}
		}
	}
}