Numbers to words

c program to convert numbers into words
Example:
input: 4232
output: four two three two
program:

#include<stdio.h>
#include<string.h>
int main()
{
         char number[50];
         printf("enter number");
         scanf("%s",&number);
         int len=strlen(number);
         printf("\n");
         int i;
         for(i=0;i<len;i++)
        {
                switch(number[i])
               {
                      case '0': printf("zero ");
                                   break;
                      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("entered non number character");
             }
      }
 return 0;
}