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Program to Find Length of String

Program to Find Length of String

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  • Write a program to Find Length of String in C
  • Write a program to Find Length of String in C++
  • Write a program to Find Length of String in Python
  • Write a program to Find Length of String in PHP
  • Write a program to Find Length of String in Java
  • Write a program to Find Length of String in Java Script
  • Write a program to Find Length of String in C#

Explanation:

Counting the characters in a string till the end is reached is the logic used to determine its length. The general strategy is as follows:

Logic Steps:

  1. Initialize a Counter:
    • Start a counter variable at 0.
  2. Traverse the String:
    • Iterate through each character in the string.
  3. Count Characters:
    • For every character encountered (excluding the null terminator NULL in C/C++), increment the counter.
  4. Output the Count:
    • Once the end of the string is reached, the counter holds the total number of characters.

Program to Find Length of String

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

int main() {
    char str[100];
    
    // Scan the string
    printf("Enter a string: ");
    fgets(str, sizeof(str), stdin);  // Use fgets to read the string
    
    // Find and print the length of the string
    int length = strlen(str) - 1;  // Subtract 1 to exclude the newline character
    printf("Length of the string: %d\n", length);
    
    return 0;
}


#include <iostream>
#include <string>

int main() {
    std::string str;
    
    // Scan the string
    std::cout << "Enter a string: ";
    std::getline(std::cin, str);  // Read the string with spaces
    
    // Find and print the length of the string
    int length = str.length();
    std::cout << "Length of the string: " << length << std::endl;
    
    return 0;
}


str = input("Enter a string: ")

# Find and print the length of the string
length = len(str)
print("Length of the string:", length)


<?php
// Scan the string
echo "Enter a string: ";
$str = trim(fgets(STDIN));  // fgets reads input and trim removes newline

// Find and print the length of the string
$length = strlen($str);
echo "Length of the string: " . $length . "\n";
?>


import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        // Initialize scanner object for user input
        Scanner scanner = new Scanner(System.in);
        
        // Scan the string
        System.out.print("Enter a string: ");
        String str = scanner.nextLine();  // nextLine reads the entire line
        
        // Find and print the length of the string
        int length = str.length();
        System.out.println("Length of the string: " + length);
    }
}


let str = prompt("Enter a string: ");  // Use prompt for input in browsers

// Find and print the length of the string
let length = str.length;
console.log("Length of the string: " + length);


using System;

class Program {
    static void Main() {
        // Scan the string
        Console.Write("Enter a string: ");
        string str = Console.ReadLine();  // Reads the entire line
        
        // Find and print the length of the string
        int length = str.Length;
        Console.WriteLine("Length of the string: " + length);
    }
}

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