C :

#include <stdio.h>
void main()
{
	int i;
	scanf("%d",&i);
	switch(i)
	{
	
		case 1:
			printf("one");
			break;
		case 2:
			printf("two");
			break;
		case 3:
			printf("three");
			break;
		case 4:
			printf("four");
			break;
		case 5:
			printf("five");
			break;
		case 6:
			printf("six");
			break;
		case 7:
			printf("seven");
			break;
		case 8:
			printf("eight");
			break;
		case 9:
			printf("nine");
			break;
		default:
			printf("out");							
	}
	
}

C++ :

#include<iostream>
using namespace std;
int main(){
	int n;
	cin>>n;
	if(n==1){
		cout<<"one"<<endl;
	}else if(n==2){
		cout<<"two"<<endl;
	}else if(n==3){
		cout<<"three"<<endl;
	}else if(n==4){
		cout<<"four"<<endl;
	}else if(n==5){
		cout<<"five"<<endl;
	}else if(n==6){
		cout<<"six"<<endl;
	}else if(n==7){
		cout<<"seven"<<endl;
	}else if(n==8){
		cout<<"eight"<<endl;
	}else if(n==9){
		cout<<"nine"<<endl;
	}else{
		cout<<"out"<<endl;
	}
}

Python :

n = int(input())
if n == 1:
    print('one')
if n == 2:
    print('two')
if n == 3:
    print('three')
if n == 4:
    print('four')
if n == 5:
    print('five')
if n == 6:
    print('six')
if n == 7:
    print('seven')
if n == 8:
    print('eight')
if n == 9:
    print('nine')
if n > 9:
    print('out')