Find length of string using recursion

Problem statement:- Program to Find the length of the string using recursion.

Data requirement:-

   Input Data:- str

  Output Data:-StringLength(str,0)

Program in C

Here is the source code of the C Program to Find the length of string using recursion.

Code:

#include<stdio.h>

#include<string.h>

int StringLength(char str[], int i)

{

    if(str[i]=='\0')

        return 0;

    else

        return (1+StringLength(str,i+1));

}

int main()

{

    char str[30];

    printf("Enter your String:");

    scanf("%[^\n]",str);

    printf("Length of the String is: %d",StringLength(str,0));

}

Input/Output:

Enter your String:String recursion Program

Length of the String is: 24

Program in C++

Here is the source code of the C++ Program to Find the length of string using recursion.

Code:

#include<iostream>

using namespace std;

int StringLength(string str, int i)

{

    if(str[i]=='\0')

        return 0;

    else

        return (1+StringLength(str,i+1));

}

int main()

{

    string str;

    cout<<"Enter your String:";

    getline(cin, str);

    cout<<"Length of the String is: "<<StringLength(str,0);

}

Input/Output:

Enter your String:csinfo

Length of the String is: 6

Program in Java

Here is the source code of the Java Program to Find the length of string using recursion.

Code:

import java.util.Scanner;

public class FindStringLength {

static int StringLength(char str[], int i)

{

    if(str[i]=='\0')

        return 0;

    else

        return (1+StringLength(str,i+1));

}

public static void main(String[] args) {

           Scanner cs=new Scanner(System.in);

           String str1;

           System.out.print("Enter your String:");

           str1=cs.nextLine();

           str1+='\0';

           char str[]=str1.toCharArray();

           System.out.print("Length of the String is: "+StringLength(str,0));

        cs.close();

}

}

Input/Output:

Enter your String:Programming string

Length of the String is: 18

Program in Python

Here is the source code of the Python Program to Find the length of string using recursion.

Code:

def StringLength(str, i):

    if (str[i] == '\0'):

        return 0

    else:

        return (1 + StringLength(str, i + 1))

str=input("Enter your String:")

str+='\0'

print("Length of the String is: ",StringLength(str,0))

Input/Output:

Enter your String:catbat

Length of the String is:  6

Most Recommend Questions:-

• Write a program to find the length of the string using the inbuilt function.

• Write a program to find the length of the string without using the inbuilt function.

• Write a program to copy one string to another using recursion.

• Write a recursive function to return the number of uppercase letters in a string.

• Write a Program to Check if the given String is palindrome or not using recursion.

More Questions:-

C/C++/Java/Python Practice Question