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Question

What is the output of the following code?
#include<stdio.h>
int recursive_get_len(char *s, int len)
{
      if(s[len] == 0)
        return 0;
      return 1 + recursive_get_len(s, len+1);
}
int main()
{
      char *s = "123-1-2-3";
      int len = recursive_get_len(s,0);
      printf("%d",len);
      return 0;
}

a.

3

b.

6

c.

9

d.

10

Answer: (c).9

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