How to find the length of an char array in c

Question

I want to find the length of this :

char *s[]={\"s\",\"a\",\"b\"};

it should count 4 with the /0 but the strlen or sizeof(s)/sizeof(char) gives

Answer 1

Why should it count 4? you have 3 pointers to char in this array, it should count 12 on most 32-bit platforms.