leetcode374

// Forward declaration of guess API.
// @param num, your guess
// @return -1 if my number is lower, 1 if my number is higher, otherwise return 0
int guess(int num);

class Solution {
public:
    int guessNumber(int n) {
        int i=,j=n;
    while(i<j){
        int mid=i+(j-i)/;
        if(guess(mid)==){
            return mid;
        }else if(guess(mid)==){
            i=mid+;
        }else{
            j=mid;
        }
    }
    return i;
    }
};

https://leetcode.com/problems/guess-number-higher-or-lower/#/description