c++ - While loop keeps printing out and not reading the next line -

this first simple program. keeps printing out guess is. non-stop , doesn't ask user input. (the next line of code.) mistake?

 #include <iostream>  #include <string>  using namespace std;  int main() {     string username;     cout << "hello there.\n";     cout << "my name tars. \n";     cout << "what name? \n";     getline(std::cin, username);     cout << username << ", let's play game.\n";     int secretnum;     secretnum = rand() % 20 + 1;     cout << "i'm thinking of number between 1-20.\n";     int guess;     bool conti = true;      while (conti)          cout << "guess is. \n";         cin >> guess;             if (guess == secretnum)         {             cout << "you read mind!";             conti = false;         }         if (guess < secretnum)         {             cout << "that low.";         }         if (guess > secretnum)         {             cout << "that high.";         }      return 0; } 

you need use brackets

#include <iostream> #include <string> using namespace std;  int main() {      string username;     cout << "hello there.\n";     cout << "my name tars. \n";     cout << "what name? \n";     getline(std::cin, username);     cout << username << ", let's play game.\n";     int secretnum;     secretnum = rand() % 20 + 1;     cout << "i'm thinking of number between 1-20.\n";     int guess;     bool conti = true;      while (conti)     {           cout << "guess is. \n";          cin >> guess;           if (guess == secretnum)          {              cout << "you read mind!";              conti = false;          }           if (guess < secretnum)          {              cout << "that low.";          }           if (guess > secretnum)          {              cout << "that high.";          }      }      return 0;  } 

by default if don't use them next line considered part of while loop in case:

while (conti)     cout << "guess is. \n";