C Program Find the Length of Linked List using Recursion

This C Program uses recursive function & calculates the length of a string. The user enters a string to find it’s length.

Here is the source code of the C program to find the length of a string. The C Program is successfully compiled and run on a Linux system. The program output is also shown below.

  1. /*
  2.  * C program to find the length of a string
  3.  */
  4. #include <stdio.h>
  6. int length(char [], int);
  7. int main()
  8. {
  9.     char word[20];
  10.     int count;
  12.     printf("Enter a word to count it's length: ");
  13.     scanf("%s", word);
  14.     count = length(word, 0);
  15.     printf("The number of characters in %s are %d.\n", word, count);
  16.     return 0;
  17. }
  19. int length(char word[], int index)
  20. {
  21.     if (word[index] == '\0')
  22.     {
  23.         return 0;
  24.     }
  25.     return (1 + length(word, index + 1));
  26. }

$ cc pgm17.c
$ a.out
Enter a word to count it's length: 5
The number of characters in 5 are 1.
$ a.out
Enter a word to count it's length: sanfoundry
The number of characters in sanfoundry are 10.

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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