Sorted array is rotated. Find starting point or the index of the minimum element

// INPUT : {7,0,1,2,3,4,5,6}
// OUTPUT : array starts at value=0 and index=1

#include<stdio.h>

int findstartRecur(int a[],int start,int end){
int mid = (start+end)/2;
if(a[start] < a[end]){
return start;
}
if(end-start < 2){
return (a[end] < a[start])?end:start;
}
if(a[mid] > a[start]){
return findstartRecur(a,mid+1,end);
} else{
return findstartRecur(a,start,mid);
}
}

int main(){
int a[] = {7,0,1,2,3,4,5,6};
int start = findstartRecur(a,0,sizeof(a)/sizeof(int)-1);
printf("array starts at value=%d and index=%d",a[start],start);
return 0;
}