Program to count the number of characters in a word

Last Updated : 18 Jan, 2024

Write a program to count the number of characters in a word.

Examples:

Input: Word: "programming"
Output: 11

Input: Word: "hello"
Output: 5

Approach: To solve the problem, follow the below idea:

To count the number of characters in a word, maintain a variable to count all the characters. Iterate through each character in the word and increment the counter for every character.

Step-by-step algorithm:

Initialize a counter variable to 0.
Iterate through each character in the word.
For each character encountered, increment the counter.
After iterating through all characters, the counter will contain the total number of characters in the word.

Below is the implementation of the algorithm:

C++

#include <iostream>

using namespace std;

int main() {
    string word = "programming";
    int count = 0;

    for (int i = 0; i < word.length(); ++i) {
        ++count;
    }

    cout << "Number of characters: " << count << endl;

    return 0;
}

#include <stdio.h>

int main()
{
    char word[] = "programming";
    int count = 0;

    for (int i = 0; word[i] != '\0'; ++i) {
        ++count;
    }

    printf("Number of characters: %d\n", count);

    return 0;
}

Java

public class CharacterCount {
    public static void main(String[] args)
    {
        String word = "programming";
        int count = 0;

        for (int i = 0; i < word.length(); ++i) {
            ++count;
        }

        System.out.println("Number of characters: "
                           + count);
    }
}

Python3

word = "programming"
count = 0

for char in word:
    count += 1

print("Number of characters:", count)

using System;

class Program {
    static void Main()
    {
        string word = "programming";
        int count = 0;

        foreach(char c in word) { ++count; }

        Console.WriteLine("Number of characters: " + count);
    }
}

JavaScript

let word = "programming";
let count = 0;

for (let i = 0; i < word.length; ++i) {
    ++count;
}

console.log("Number of characters:", count);

Output

Number of characters: 11

Time Complexity: O(N), where N is the length of the word.
Auxiliary Space: O(1)

Program to count the number of characters in a word

srinam

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