Count of Vowels, Consonants, Digits, Spaces, Special characters: C Program

In this C program we are going to count Number of Vowels, Consonants, Digits, White spaces and Special characters in a given string.

Description:

v – Vowels : a, e, i, o, u.
c – Consonants : Other than vowels. (b, c, d, f…)
d – Digits : 0 to 9.
ws – White space.
sc – Special characters : !, @, #, $, %….

Algorithm: To count Number of Vowels, Consonants, Digits, White spaces and Special characters

STEP 1: START
STEP 2: SET the values of all quantities to zero
              vowels = 0, consonants = 0, digits = 0
              white spaces = 0, special characters = 0
STEP 3: READ a string from keyboard
              READ str
STEP 4: CONVERT the string to lower case
              strlwr(str)
STEP 5: FIND the length of string
              n = strlen(str)
STEP 6: REPEAT the steps 7 to 11 till END OF STRING reached
              LOOP from i = 0 to END OF STRING
STEP 7: CHECK if the character is vowel
              if character = vowel
              INCREAMENT the value of vowel
              v = v + 1
STEP 8: CHECK if the character is alphabet
              if character = alphabet
              INCREAMENT the value of alphabet
              a = a + 1
              Find number of consonants
              c = a – v
STEP 9: CHECK if the character is digit
              if character = digit
              INCREAMENT the value of digit
              d = d + 1
STEP 10: CHECK if the character is whit space
              if character = space
              INCREAMENT the value of space
              ws = ws + 1
STEP 11: CALCULATE special character
              sc = n – v – c – d – ws
STEP 12: PRINT number of vowels, consonants, digits, spaces, special characters
              PRINT v, c, d, ws, sc
STEP 13: END

C Program: To count Number of Vowels, Consonants, Digits, White spaces and Special characters

#include<stdio.h>
#include<conio.h>
#include<string.h>
int main() 
{
    char str[500];
    int v=0,a=0,c=0,d=0,ws=0,sc=0,n;
    printf("Enter a string:\n");
   gets(str);
   
   strlwr(str);
   n=strlen(str);
   for (int i = 0; str[i] != '\0'; ++i)
   {
        if (str[i] == 'a' || str[i] == 'e' || str[i] == 'i' ||str[i] == 'o' || str[i] == 'u')
            v++;
        if (str[i] >= 'a' && str[i] <= 'z')
            a++;
        c=a-v;
        if(str[i] >= '0' && str[i] <= '9')
            d++;
        if(str[i] == ' ')
            ws++;
        sc=n-v-c-d-ws;
    }
    printf("Vowels: %d", v);
    printf("\nConsonants: %d", c);
    printf("\nDigits: %d", d);
    printf("\nWhite spaces: %d", ws);
     printf("\nSpecial characters: %d", sc);
     getch();
    return 0;
}

Output:

Enter a string:
I Can – Tutorials@2021%
Vowels: 6
Consonants: 7
Digits: 4
White spaces: 3
Special characters: 3