demo 2.cpp

#include <stdio.h>
int main()
{
    int n, num = 0,k=0;
     printf("Enter any number to print in words: ");
    scanf("%d", &n);
       for(int i=n;i>0;i=i/10)
    k++;
     printf("\n%d",k);
    while(n != 0)
    {
        num = (num * 10) + (n % 10);
        n = n/10;
    }
   while(num != 0)
    {
        switch(num % 10)
        {
            case 0: 
                printf("Zero ");
                break;
                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;
        }
        num = num / 10;
    }
    return 0;
}