C program to count number of vowels and consonants in a String

Difficulty Level : Easy
Last Updated : 25 Nov, 2019

Given a string and write a C program to count the number of vowels and consonants in this string.

Examples:

Input: str = "geeks for geeks"
Output:
Vowels: 5
Consonants: 8

Input: str = "abcdefghijklmnopqrstuvwxyz"
Output:
Vowels: 5
Consonants: 21

Approach:

Take the string as input
Take each character from this string to check
If this character is a vowel, increment the count of vowels
Else increment the count of consonants.
Print the total count of vowels and consonants in the end.

Below is the implementation of the above approach:

// C program to count the number of 
// vowels and consonants in a string 
  
#include <stdio.h> 
  
// Function to count number 
// of vowels and consonant 
void count_vowels_and_consonant(char* str) 
{ 
    // Declare the variable vowels and consonant 
    int vowels = 0, consonants = 0; 
  
    int i; 
    char ch; 
  
    // Take each character from this string to check 
    for (i = 0; str[i] != '\0'; i++) { 
  
        ch = str[i]; 
  
        // If this character is a vowel, 
        // increment the count of vowels 
        if (ch == 'a' || ch == 'e'
            || ch == 'i' || ch == 'o'
            || ch == 'u' || ch == 'A'
            || ch == 'E' || ch == 'I'
            || ch == 'O' || ch == 'U') 
            vowels++; 
  
        // If this character is a space 
        // skip it 
        else if (ch == ' ') 
            continue; 
  
        else
            // Else increment the count of consonants 
            consonants++; 
    } 
  
    // Print the total count of vowels and consonants 
    printf("\nVowels: %d", vowels); 
    printf("\nConsonants: %d", consonants); 
} 
  
// Driver function. 
int main() 
{ 
    char* str = "geeks for geeks"; 
    printf("String: %s", str); 
  
    count_vowels_and_consonant(str); 
  
    return 0; 
} 

Output:

String: geeks for geeks
Vowels: 5
Consonants: 8

Attention reader! Don’t stop learning now. Get hold of all the important C++ Foundation and STL concepts with the C++ Foundation and STL courses at a student-friendly price and become industry ready.

My Personal Notes

Related Articles