Reverse Vowels of a String

Write a function that takes a string as input and reverse only the vowels of a string.

Example 1:
Given s = "hello", return "holle".

Example 2:
Given s = "leetcode", return "leotcede".

 char* reverseVowels(char* s) {
     int i;
     int j;
     char temp;
     i = ;
     j = strlen(s) - ;
     while(i < j){

         if(s[i] != 'a' && s[i] != 'e' && s[i] != 'i' && s[i] != 'o' && s[i] != 'u' && s[i] != 'A' && s[i] != 'E' && s[i] != 'I' && s[i] != 'O' && s[i] != 'U')
             i++;
         if(s[j] != 'a' && s[j] != 'e' && s[j] != 'i' && s[j] != 'o' && s[j] != 'u' && s[j] != 'A' && s[j] != 'E' && s[j] != 'I' && s[j] != 'O' && s[j] != 'U')
             j--;
         if((s[i] == 'a' || s[i] == 'e' || s[i] == 'i' || s[i] == 'o'|| s[i] == 'u' || s[i] == 'A' || s[i] == 'E'|| s[i] == 'I'|| s[i] == 'O'|| s[i] == 'U') && (s[j] == 'a' || s[j] == 'e' || s[j] == 'i' || s[j] == 'o'|| s[j] == 'u' || s[j] == 'A' || s[j] == 'E'|| s[j] == 'I'|| s[j] == 'O'|| s[j] == 'U'))
         {
             temp = s[i];
             s[i] = s[j];
             s[j] = temp;
             i++;
             j--;
         }

     }
     return s;
 }