C Program to Find Index Number of Vowels in a String

Introduction

In this article, we will explore a C program that allows you to find the index number of vowels in a given string.

The program will provide an efficient solution to this problem, helping you identify the positions of vowels within the string.

Also Read: C Program To Read Two Files Simultaneously

By following the step-by-step guide provided here, you will be able to understand the logic behind the program and implement it in your own projects.

How to Find Index Number of Vowels in a String using C Program?

Also Read: Armstrong Number in C Programming

To find the index numbers of vowels in a string using C program, you can follow the below steps:

1. Start by including the necessary header files in your program, such as stdio.h for standard input/output operations.
2. Define a function that takes a string as input and returns the index numbers of vowels present in the string.
3. Inside the function, declare variables to keep track of the current index and the length of the string.
4. Use a loop to iterate through each character of the string.
5. Check if the current character is a vowel. In C, the vowels include ‘a’, ‘e’, ‘i’, ‘o’, and ‘u’. You can use a conditional statement to perform this check.
6. If the current character is a vowel, print its index number. To calculate the index number, you can use the current index variable.
7. Continue the loop until all characters in the string have been checked.
8. Finally, return from the function.

Step-by-Step Implementation

Also Read: C Program to Find the Inverse of 2×2 Matrix

Let’s now dive into the step-by-step implementation of the C program to find the index numbers of vowels in a string:

Step 1: Including the necessary header files

Also Read: C Program to Copy the Contents of One File into Another File

#include <stdio.h>

Also Read: Getchar and Putchar Function in C with Example

Step 2: Defining the function

void findVowelIndices(char str[]) {
    // Function logic will be implemented here
}

Also Read: Best 5 Programs on Fibonacci Series in C

Step 3: Declaring variables

void findVowelIndices(char str[]) {
    int i, len;
    len = strlen(str);
}

Also Read: Program To Reverse a String in C using Pointer

Step 4: Looping through the string

void findVowelIndices(char str[]) {
    int i, len;
    len = strlen(str);

    for (i = 0; i < len; i++) {
        // Check if the current character is a vowel
        // Print the index number if it is a vowel
    }
}

Also Read: Find the Runner Up Score | Hackerrank Solution

Step 5: Checking for vowels and printing index numbers

void findVowelIndices(char str[]) {
    int i, len;
    len = strlen(str);

    for (i = 0; i < len; i++) {
        // Check if the current character is a vowel
        if (str[i] == 'a' || str[i] == 'e' || str[i] == 'i' || str[i] == 'o' || str[i] == 'u') {
            printf("Vowel found at index %d\n", i);
        }
    }
}

Also Read: 25 Tricky Questions on Pointers in C: Explained and Answered

Step 6: Returning from the function

void findVowelIndices(char str[]) {
    int i, len;
    len = strlen(str);

    for (i = 0; i < len; i++) {
        // Check if the current character is a vowel
        if (str[i] == 'a' || str[i] == 'e' || str[i] == 'i' || str[i] == 'o' || str[i] == 'u') {
            printf("Vowel found at index %d\n", i);
        }
    }

    return;
}

Also Read: C Program to Remove Comments and White Spaces from a File

FAQs (Frequently Asked Questions)

Also Read: Two Sum in C Programming with Solution

Conclusion

In conclusion, the C program provided in this article offers an efficient solution to finding the index numbers of vowels in a given string.

By following the step-by-step implementation guide and understanding the logic behind the program, you can easily incorporate this functionality into your own C projects.

Also Read: Switch Case in C Program to Calculate Area of Circle and Triangle

Remember to handle any necessary modifications, such as considering uppercase vowels or handling non-alphabetic characters, according to your specific requirements.