numbers

/*
**    numbers
**       1
**      121
**     12321
**      121
**       1
*/

#include <iostream>
#define hello "Hello \n"
#define msg "please enter one digit :"
#define error "is more than one digit \n"

void printNumbers(int n ,int i){
	//spaces
	for(int j = n-i; j>=0; j--){
		std::cout <<" ";
	}
	//numbers ascending
	for(int k = 1; k<=i ; k++){
		std::cout <<k;
	}
	//numbers descending
	for(int l = i-1 ; l>=1 ; l--){
		std::cout << l;
	}
	std::cout << "\n";
}

int main(){

	std::cout << hello << msg ;
	int n = 5;
	std::cin >>n;
	if(n>=10){
		std::cerr << n << error;
		return 1;
	}
	//first part
	for(int i = 1; i<=n ; i++){
		printNumbers(n,i);
	}
	//second part
	for(int i = n-1; i>=1 ; i--){
		printNumbers(n,i);
	}

return 0;
}