#include <iostream>
#include <cstring>
#include <cctype>
using namespace std;

int countVowels( char [] );
void transform( char [] );

int main() {
  //  char mystring[] = "hello";
  char mystring[100];
  int numVowels;
  cout << "enter a word: ";
  cin >> mystring;
  cout << "mystring = [" << mystring << "] ";
  numVowels = countVowels( mystring );
  cout << "number of vowels = " << numVowels << endl;
  cout << "before transform: [" << mystring << "]\n";
  transform( mystring );
  cout << "after transform: [" << mystring << "]\n";
} // end of main()

int countVowels( char a[] ) {
  int sum = 0;
  for ( int i=0; i<strlen(a); i++ ) {
    if (( a[i] == 'A' ) || ( a[i] == 'a' ) ||
        ( a[i] == 'E' ) || ( a[i] == 'e' ) ||
        ( a[i] == 'I' ) || ( a[i] == 'i' ) ||
        ( a[i] == 'O' ) || ( a[i] == 'o' ) ||
        ( a[i] == 'U' ) || ( a[i] == 'u' )) {
      sum++;
    }
  }
  return( sum );
} // end of countVowels()

void transform( char a[] ) {
  for ( int i=0; i<strlen(a); i++ ) {
    a[i] = toupper( a[i] );
  }
} // end of transform()