Program to print all binary string of n length .

program:-

#include<stdio.h>

void main()

{

void bin(int ,char[]); // function declaration

int l;

char s[100];

printf("Enter the length of string ");

scanf("%d",&l);

s[l]='\0';

bin(l,s); // function calling

}

// function definition

void bin(int n,char s[])

{

if(n<1)

{

printf("%s\n",s);

}

else

{

s[n-1]='0';

bin(n-1,s);

s[n-1]='1';

bin(n-1,s);

}

}