strlen_recursion.c File Reference

Program to calculate length of string using recursion. More...

#include <assert.h>
#include <string.h>

Include dependency graph for strlen_recursion.c:

Functions
int	length (const char *str)
	Returns the length of string using recursion. More...
static void	test ()
	Test function. More...
int	main ()
	Driver Code. More...

Detailed Description

Program to calculate length of string using recursion.

Author

Du Yuanchao

Function Documentation

length()

int length

(

const char *

str

)

Returns the length of string using recursion.

Parameters

str	the pointer of string.

Returns

the length of string.

{ return *str == '\0' ? 0 : 1 + length(++str); }

main()

int main

(

void

)

Driver Code.

Returns

0 on exit

{
    test();
    return 0;
}

Here is the call graph for this function:

test()

static void test ( void  )

static

Test function.

Returns

void

{
    assert(length("") == strlen(""));
    assert(length(("a")) == strlen("a"));
    assert(length("abc") == strlen("abc"));
    assert(length("abc123def") == strlen("abc123def"));
    assert(length("abc\0def") == strlen("abc\0def"));
}

Here is the call graph for this function: