/**********************************************************************  
C Program to calculate frequency of vowels in a string

 **********************************************************************/
#include <stdio.h>
#include <conio.h>
void main()
{
  int a=0,e=0,i=0,o=0,u=0,sum=0;
  char c;
  printf("Enter string:-  ");
  printf("\nString will be terminated if you press Ctrl-Z & then ENTER.");
  printf("\nSTRING:-  ");
  while ((c=getchar())!=EOF)
    {
      if (c=='a'||c=='A')
        a=a+1;
      if (c=='e'||c=='E')
        e=e+1;
      if (c=='i'||c=='I')
        i=i+1;
      if (c=='o'||c=='O')
        o=o+1;
      if (c=='u'||c=='U')
        u=u+1;
    }
  sum=a+e+i+o+u;
  printf("\nFrequency of vowel 'a' is %d.",a);
  printf("\nFrequency of vowel 'e' is %d.",e);
  printf("\nFrequency of vowel 'i' is %d.",i);
  printf("\nFrequency of vowel 'o' is %d.",o);
  printf("\nFrequency of vowel 'u' is %d.",u);
  printf("\nTotal no. of vowels in the text is %d.",sum);
}

/*

OUTPUT:
Enter string:-
String will be terminated if you press Ctrl-Z & then ENTER.
STRING:-  weghwehfgwwwpqezrhdnxmy,aldhfbvgctesvdchxmakwqpriuzttrewqasdgfhjklmynxc

Frequency of vowel 'a' is 3.
Frequency of vowel 'e' is 5.
Frequency of vowel 'i' is 1.


*/