Q51

Consider the following ANSI-C function. int func(int start, int end){ int length=end+1-start; if((length<1)||(start<0)||(end<0)){ return(0); } if(length%3==0){ return(func(start+1, end)); }else if(length%3==1){ return(1+func(start, end-1)); }else { return(func(start+2, end)); } } The maximum possible value that can be returned from this function is $\_\_\_\_\_\_$. (answer in integer) Note: Ignore syntax errors (if any) in the function.