#include <stdio.h>
#include <string.h>
#include <ctype.h>

char *rumdreh(char *str){
   int i, r,l,j;
   char safe;
   r = strlen(str)-1;
   l = 0;
   while(l<r){
       safe = str[l];
       str[l] = str[r];
       str[r] = safe;
       l +=1;
       r -=1;
   }
    return str;
}


int main () {
   char str[50];
   char ersatz[64];
   int len;
   int i, r,l,j;
   int count = 0;
   char safe;
   char vocals[] = "aeiou";
   char copy[64];

   strcpy(str, "A23lloc 23 a1 te2d");

   for(i=0;i<strlen(str);i++){
       if(!isdigit(str[i])){
       ersatz[count] = str[i];
       count +=1;
       }
   }
   printf("%d\n", strlen(ersatz));
   printf("%s\n", ersatz);
   r = strlen(ersatz)-1;
   l = 0;
   while(l<r){
       safe = ersatz[l];
       ersatz[l] = ersatz[r];
       ersatz[r] = safe;
       l +=1;
       r -=1;
   }
   int idx = 0;
   char newest[64];
   for(i=0;i<strlen(ersatz);i++){
       if(!(ersatz[i] == ' ')){

          newest[idx] = ersatz[i];
          idx +=1;
       }
   }
   newest[idx] = '\0';


   for(i=0;i<strlen(newest);i++){
       for(j=0;j<strlen(vocals);j++){
           if(newest[i] == vocals[j]){
               newest[i] = toupper(vocals[j]);
               break;
           }
       }

   }

   strcpy(ersatz, newest);
   strcpy(copy, ersatz);

   strcat(ersatz, rumdreh(copy));
   printf("%s\n", ersatz);



   return(0);
}