`pc012.c`¶

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.

Metadata¶

Property	Detail
Author	Amit Dutta amitdutta4255@gmail.com
Date	12 Dec 2025
License	MIT License (See the LICENSE file for details)
Difficulty	Intermediate (index: 5 / 10)

Concepts¶

Beta Feature

This concept detection system is still in beta and may occasionally show incorrect or incomplete results.

Pointers
Recursion
Array
Iteration

Actions¶

Raw View on GitHub

You can print or save this file by opening Raw and using your browser.

Source Code¶

#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;
}

Explanation¶

Explain with AI

Copy the prompt below and paste it into any AI assistant.

    You are explaining a C programming code to a beginner.

    STRICT RULES:

    - Only use the given code. Do NOT assume anything not present.

    - Do NOT add extra examples.

    - Keep explanation clear and short.

    - If something is unclear, say "Not clear from code".

    - Follow the exact format below. Do NOT change headings.

    FORMAT:

    [START]

    ## What it does

    (Explain the overall purpose in 1-2 sentences)

    ## Step-by-step

    (Explain how the code works in steps, simple language)

    ## Key Concepts

    (List concepts like loop, condition, function, etc.)

    ## Notes

    (Mention any limitations, errors, or assumptions)

    [END]

    CODE (pc012.c):

    #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;
    }

pc012.c¶