Question

How to get the indexes of words from an array of strings that start with a specific letter in C

Answer 1

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

void findIndexes(char *arr[], int size, char letter) {
    letter = tolower(letter); // Convert the letter to lowercase for case-insensitive comparison
    for (int i = 0; i < size; i++) {
        if (tolower(arr[i][0]) == letter) {
            printf("Index %d: %s\n", i, arr[i]);
        }
    }
}

int main() {
    char *words[] = {"zero", "one", "two", "three", "four", "five", 
                     "six", "seven", "eight", "nine", "ten"};
    int size = sizeof(words) / sizeof(words[0]);
    char specificLetter = 't';

    findIndexes(words, size, specificLetter);

    return 0;
}


/*
run:

Index 2: two
Index 3: three
Index 10: ten

*/

 

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