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.

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/*
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 * C program to find the length of a string

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 */
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#include <stdio.h>
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```
 
```
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int length(char [], int);
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int main()
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{
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    char word[20];
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    int count;
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    printf("Enter a word to count it's length: ");

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    scanf("%s", word);
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    count = length(word, 0);
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    printf("The number of characters in %s are %d.\n", word, count);

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    return 0;
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}
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int length(char word[], int index)
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{
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    if (word[index] == '\0')
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    {
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        return 0;
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    }
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    return (1 + length(word, index + 1));

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}
```

$ 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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