c program to calculate length the string using recursion and function

c program to calculate length  the string using  function and recursion :



In this program, we will read a string through user and calculate the length of the string using recursion in c programming language. We will not use standard function strlen() to calculate the length of the string.



required  knowledge : 

string  ,  for loop  ,  function and recrusion  



Example : 

Input : atikurrahman

Output : length = 13






calculate length  the string using  function and recursion program code : 



#include<stdio.h>

int len(char *str)
{
    static int count=0;
    if(*str!=0)
    {
        count++;
        len(++str);
    }
    else
        return count;
}
int main()
{
    char strin[100];
    printf("Enter the string name: ");
    scanf("%s",&strin);
    int bb=len(strin);
    printf("length = %d",bb);

    return 0;

}

OUTPUT :