C and C++ program to find number of vowels, consonants, digits and other characters in a string.

// Program to find total number of vowels, digits and other characters in string
#include "iostream.h"
#include "conio.h"
#include "ctype.h"
#include "stdio.h"
void main()
{
 char str[50];
 int i, vc= 0, dc = 0, ot = 0;
 clrscr();
 cout << "\n\tEnter any string -> ";
 gets(str);
 i = 0;
 while (str[i] != '\0')
 {
  str[i] = tolower(str[i]);
  if (((str[i] == 'a')) || ((str[i] == 'e')) || ((str[i] == 'o')) || ((str[i] == 'u')))
   vc++;
  else
   if ((str[i] >= '0') && (str[i] <= '9'))
    dc++;
   else
    ot++;
  i++;
 }
 cout << "\n\tNumber of vowels are : " << vc;
 cout << "\n\tNumber of digits are : " << dc;
 cout << "\n\tNumber of other characters are : " << ot;
}

Source: www.LearnCandCpp.com