more clarification please in C programming

Question

there is issue with my codes:

#include <stdio.h>

#include<string.h>

char s[80]

int i;

int main (){

strcpy(s, "hi there");

i=0;

while(s [i] !='&'){

i ++;

}

i ++;

while(s[i] !='&'){

i++;

}

printf(" i=%d\n",i);

}