Efficient code for extracting unique elements from a sorted list of array

int main()  
{  
int a\[10\]={1, 2, 4, 4, 7, 8, 9, 14, 14, 20};  
int i;  
for (i = 0;i<9;i++)  
{  
if (a\[i\] != a\[i+1\])  
printf("%d\\n",a\[i\]);  
}  
return 0;  
}