Implementation of Double-Dabble Method in C

C code to convert a binary string into decimal:

#include<stdio.h>

#include<stdlib.h>

#include<string.h>

int main()

{

char bin[65];

scanf("%s",bin);

int len=strlen(bin);

long long dec=bin[0]-'0';

for(int i=1;i<len;i++)

{

dec=dec*2+(bin[i]-'0');

}

printf("%lld\n",dec);

return 0;

}