pc012.c

Metadata

• Author — Amit Dutta
• Last updated — 12 Dec 2025
• License — MIT License (See the LICENSE file for details)

Problem Statement

Problem Statement

Write a C function that receives a string (character array) and uses pointers to count and return the total number of vowels and consonants in that string.

Source Code

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#include <stdio.h>
#include <ctype.h>

void charCounter(char[], int *, int *);

int main()
{
    char str[101];
    int vowelCount, consonantCount;
    printf("Enter the string (Max: 100 character): ");
    if (fgets(str, sizeof(str), stdin) == NULL)
    {
        printf("Error reading input.\n");
        return 1;
    }
    charCounter(str, &vowelCount, &consonantCount);
    printf("\nVowel Count: %d", vowelCount);
    printf("\nConsonant Count: %d", consonantCount);
    printf("\nTotal Character: %d", vowelCount + consonantCount);
    return 0;
}

void charCounter(char str[], int *vowelCount, int *consonantCount)
{
    int tempVowelCount = 0, tempConsonantCount = 0;
    while (*str != '\0')
    {
        char ch = tolower(*str);
        if (isalpha(ch))
        {
            if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u')
            {
                tempVowelCount++;
            }
            else
            {
                tempConsonantCount++;
            }
        }
        str++;
    }

    *vowelCount = tempVowelCount;
    *consonantCount = tempConsonantCount;
}