What does “control reaches end of non-void function” mean?

Question

I\'ve been getting strange compiler errors on this binary search algorithm. I get a warning that control reaches end of non-void function. What does this mean?<

Answer 1

It means it's searching for a function that needs to be completed.

else if(val == sorted[mid]) return mid;

so, remove the if() part and modify the code or add an else() at the end which returns an int.