You can also use the array brackets for better readability as follows...
Note, this example compiled on gcc, an 8051 compiler was not tried, but you would want to add 'idata'.

<>< Lance.

<code>
char test(unsigned char array[]){
 char i, temp;
 temp = 0;
 i = 0;
 for(i=0;i<9;i++){
  temp = temp + array[i];
  array[i] = 0;
 }
 return temp;
}

unsigned char global_array[] = {1,2,3,4,5,6,7,8,9,10};

main(){
 test(global_array);
}
</code>